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Finding the Fourth Proportional to 375,189.12, 562,790.88 and 138,409.92

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Solution

The fourth proportional to 375,189.12, 562,790.88 and 138,409.92 is: 207,617.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,189.12 : 562,790.88 = 138,409.92 : x
  2. Step 2: Convert to fraction form
    375,189.12/562,790.88 = 138,409.92/x
  3. Step 3: Cross multiply
    375,189.12x = 562,790.88 × 138,409.92
  4. Step 4: Simplify right side
    375,189.12x = 77,895,840,677.53
  5. Step 5: Solve for x
    x = 77,895,840,677.53/375,189.12
  6. Step 6: Final answer
    x = 207,617.54

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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.