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Finding the Fourth Proportional to 478,482.65, 717,864.30 and 141,532.17

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Solution

The fourth proportional to 478,482.65, 717,864.30 and 141,532.17 is: 212,339.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,482.65 : 717,864.30 = 141,532.17 : x
  2. Step 2: Convert to fraction form
    478,482.65/717,864.30 = 141,532.17/x
  3. Step 3: Cross multiply
    478,482.65x = 717,864.30 × 141,532.17
  4. Step 4: Simplify right side
    478,482.65x = 101,600,892,144.53
  5. Step 5: Solve for x
    x = 101,600,892,144.53/478,482.65
  6. Step 6: Final answer
    x = 212,339.76

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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.