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Finding the Fourth Proportional to 317,438.96, 438,064.47 and 174,201.39

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Solution

The fourth proportional to 317,438.96, 438,064.47 and 174,201.39 is: 240,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,438.96 : 438,064.47 = 174,201.39 : x
  2. Step 2: Convert to fraction form
    317,438.96/438,064.47 = 174,201.39/x
  3. Step 3: Cross multiply
    317,438.96x = 438,064.47 × 174,201.39
  4. Step 4: Simplify right side
    317,438.96x = 76,311,439,583.61
  5. Step 5: Solve for x
    x = 76,311,439,583.61/317,438.96
  6. Step 6: Final answer
    x = 240,397.21

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1.5x scale

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.