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Finding the Fourth Proportional to 317,612.64, 438,306.18 and 174,381.90

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Solution

The fourth proportional to 317,612.64, 438,306.18 and 174,381.90 is: 240,647.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,612.64 : 438,306.18 = 174,381.90 : x
  2. Step 2: Convert to fraction form
    317,612.64/438,306.18 = 174,381.90/x
  3. Step 3: Cross multiply
    317,612.64x = 438,306.18 × 174,381.90
  4. Step 4: Simplify right side
    317,612.64x = 76,432,666,341.22
  5. Step 5: Solve for x
    x = 76,432,666,341.22/317,612.64
  6. Step 6: Final answer
    x = 240,647.44

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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.