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Finding the Fourth Proportional to 462,319.28, 638,045.88 and 281,017.52

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Solution

The fourth proportional to 462,319.28, 638,045.88 and 281,017.52 is: 387,831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,319.28 : 638,045.88 = 281,017.52 : x
  2. Step 2: Convert to fraction form
    462,319.28/638,045.88 = 281,017.52/x
  3. Step 3: Cross multiply
    462,319.28x = 638,045.88 × 281,017.52
  4. Step 4: Simplify right side
    462,319.28x = 179,302,070,843.82
  5. Step 5: Solve for x
    x = 179,302,070,843.82/462,319.28
  6. Step 6: Final answer
    x = 387,831.70

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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.