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Finding the Fourth Proportional to 425,215.80, 636,948.90 and 292,246.20

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Solution

The fourth proportional to 425,215.80, 636,948.90 and 292,246.20 is: 437,768.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,215.80 : 636,948.90 = 292,246.20 : x
  2. Step 2: Convert to fraction form
    425,215.80/636,948.90 = 292,246.20/x
  3. Step 3: Cross multiply
    425,215.80x = 636,948.90 × 292,246.20
  4. Step 4: Simplify right side
    425,215.80x = 186,145,895,619.18
  5. Step 5: Solve for x
    x = 186,145,895,619.18/425,215.80
  6. Step 6: Final answer
    x = 437,768.06

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1.5x scale

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.