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Finding the Fourth Proportional to 316,655.64, 475,022.61 and 103,445.01

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Solution

The fourth proportional to 316,655.64, 475,022.61 and 103,445.01 is: 155,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,655.64 : 475,022.61 = 103,445.01 : x
  2. Step 2: Convert to fraction form
    316,655.64/475,022.61 = 103,445.01/x
  3. Step 3: Cross multiply
    316,655.64x = 475,022.61 × 103,445.01
  4. Step 4: Simplify right side
    316,655.64x = 49,138,718,641.68
  5. Step 5: Solve for x
    x = 49,138,718,641.68/316,655.64
  6. Step 6: Final answer
    x = 155,180.30

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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.