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Finding the Fourth Proportional to 478,008.65, 717,136.01 and 141,035.69

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Solution

The fourth proportional to 478,008.65, 717,136.01 and 141,035.69 is: 211,589.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,008.65 : 717,136.01 = 141,035.69 : x
  2. Step 2: Convert to fraction form
    478,008.65/717,136.01 = 141,035.69/x
  3. Step 3: Cross multiply
    478,008.65x = 717,136.01 × 141,035.69
  4. Step 4: Simplify right side
    478,008.65x = 101,141,767,703.34
  5. Step 5: Solve for x
    x = 101,141,767,703.34/478,008.65
  6. Step 6: Final answer
    x = 211,589.83

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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.