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Finding the Fourth Proportional to 317,387.89, 438,002.93 and 174,147.82

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Solution

The fourth proportional to 317,387.89, 438,002.93 and 174,147.82 is: 240,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,387.89 : 438,002.93 = 174,147.82 : x
  2. Step 2: Convert to fraction form
    317,387.89/438,002.93 = 174,147.82/x
  3. Step 3: Cross multiply
    317,387.89x = 438,002.93 × 174,147.82
  4. Step 4: Simplify right side
    317,387.89x = 76,277,254,753.47
  5. Step 5: Solve for x
    x = 76,277,254,753.47/317,387.89
  6. Step 6: Final answer
    x = 240,328.18

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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.