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Finding the Fourth Proportional to 387,851.60, 581,316.60 and 163,211.60

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Solution

The fourth proportional to 387,851.60, 581,316.60 and 163,211.60 is: 244,623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,851.60 : 581,316.60 = 163,211.60 : x
  2. Step 2: Convert to fraction form
    387,851.60/581,316.60 = 163,211.60/x
  3. Step 3: Cross multiply
    387,851.60x = 581,316.60 × 163,211.60
  4. Step 4: Simplify right side
    387,851.60x = 94,877,612,392.56
  5. Step 5: Solve for x
    x = 94,877,612,392.56/387,851.60
  6. Step 6: Final answer
    x = 244,623.49

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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.