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Finding the Fourth Proportional to 310,398.16, 428,337.72 and 174,437.92

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Solution

The fourth proportional to 310,398.16, 428,337.72 and 174,437.92 is: 240,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,398.16 : 428,337.72 = 174,437.92 : x
  2. Step 2: Convert to fraction form
    310,398.16/428,337.72 = 174,437.92/x
  3. Step 3: Cross multiply
    310,398.16x = 428,337.72 × 174,437.92
  4. Step 4: Simplify right side
    310,398.16x = 74,718,340,934.34
  5. Step 5: Solve for x
    x = 74,718,340,934.34/310,398.16
  6. Step 6: Final answer
    x = 240,717.73

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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.