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Finding the Fourth Proportional to 478,010.65, 717,139.01 and 141,037.69

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Solution

The fourth proportional to 478,010.65, 717,139.01 and 141,037.69 is: 211,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,010.65 : 717,139.01 = 141,037.69 : x
  2. Step 2: Convert to fraction form
    478,010.65/717,139.01 = 141,037.69/x
  3. Step 3: Cross multiply
    478,010.65x = 717,139.01 × 141,037.69
  4. Step 4: Simplify right side
    478,010.65x = 101,143,629,379.29
  5. Step 5: Solve for x
    x = 101,143,629,379.29/478,010.65
  6. Step 6: Final answer
    x = 211,592.84

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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.