Home / 210,385,810.60-315,429,416.70-80,943,404.20

Finding the Fourth Proportional to 210,385,810.60, 315,429,416.70 and 80,943,404.20

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Solution

The fourth proportional to 210,385,810.60, 315,429,416.70 and 80,943,404.20 is: 121,357,665.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,385,810.60 : 315,429,416.70 = 80,943,404.20 : x
  2. Step 2: Convert to fraction form
    210,385,810.60/315,429,416.70 = 80,943,404.20/x
  3. Step 3: Cross multiply
    210,385,810.60x = 315,429,416.70 × 80,943,404.20
  4. Step 4: Simplify right side
    210,385,810.60x = 25,531,930,772,518,332
  5. Step 5: Solve for x
    x = 25,531,930,772,518,332/210,385,810.60
  6. Step 6: Final answer
    x = 121,357,665.23

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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.