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Finding the Fourth Proportional to 368,685.74, 508,780.24 and 207,540.29

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Solution

The fourth proportional to 368,685.74, 508,780.24 and 207,540.29 is: 286,402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,685.74 : 508,780.24 = 207,540.29 : x
  2. Step 2: Convert to fraction form
    368,685.74/508,780.24 = 207,540.29/x
  3. Step 3: Cross multiply
    368,685.74x = 508,780.24 × 207,540.29
  4. Step 4: Simplify right side
    368,685.74x = 105,592,399,308.97
  5. Step 5: Solve for x
    x = 105,592,399,308.97/368,685.74
  6. Step 6: Final answer
    x = 286,402.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.