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Finding the Fourth Proportional to 329,123.98, 493,864.58 and 139,690.90

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Solution

The fourth proportional to 329,123.98, 493,864.58 and 139,690.90 is: 209,612.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,123.98 : 493,864.58 = 139,690.90 : x
  2. Step 2: Convert to fraction form
    329,123.98/493,864.58 = 139,690.90/x
  3. Step 3: Cross multiply
    329,123.98x = 493,864.58 × 139,690.90
  4. Step 4: Simplify right side
    329,123.98x = 68,988,387,658.32
  5. Step 5: Solve for x
    x = 68,988,387,658.32/329,123.98
  6. Step 6: Final answer
    x = 209,612.16

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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.