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Finding the Fourth Proportional to 424,492.64, 636,519.84 and 124,934.40

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Solution

The fourth proportional to 424,492.64, 636,519.84 and 124,934.40 is: 187,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,492.64 : 636,519.84 = 124,934.40 : x
  2. Step 2: Convert to fraction form
    424,492.64/636,519.84 = 124,934.40/x
  3. Step 3: Cross multiply
    424,492.64x = 636,519.84 × 124,934.40
  4. Step 4: Simplify right side
    424,492.64x = 79,523,224,298.50
  5. Step 5: Solve for x
    x = 79,523,224,298.50/424,492.64
  6. Step 6: Final answer
    x = 187,337.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.