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Finding the Fourth Proportional to 482,633.70, 665,937.99 and 291,657.30

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Solution

The fourth proportional to 482,633.70, 665,937.99 and 291,657.30 is: 402,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,633.70 : 665,937.99 = 291,657.30 : x
  2. Step 2: Convert to fraction form
    482,633.70/665,937.99 = 291,657.30/x
  3. Step 3: Cross multiply
    482,633.70x = 665,937.99 × 291,657.30
  4. Step 4: Simplify right side
    482,633.70x = 194,225,676,130.83
  5. Step 5: Solve for x
    x = 194,225,676,130.83/482,633.70
  6. Step 6: Final answer
    x = 402,428.75

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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.