Home / 285,072,001.60-427,608,002.40-213,408,385.60

Finding the Fourth Proportional to 285,072,001.60, 427,608,002.40 and 213,408,385.60

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Solution

The fourth proportional to 285,072,001.60, 427,608,002.40 and 213,408,385.60 is: 320,112,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,072,001.60 : 427,608,002.40 = 213,408,385.60 : x
  2. Step 2: Convert to fraction form
    285,072,001.60/427,608,002.40 = 213,408,385.60/x
  3. Step 3: Cross multiply
    285,072,001.60x = 427,608,002.40 × 213,408,385.60
  4. Step 4: Simplify right side
    285,072,001.60x = 91,255,133,461,824,912
  5. Step 5: Solve for x
    x = 91,255,133,461,824,912/285,072,001.60
  6. Step 6: Final answer
    x = 320,112,578.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.