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Finding the Fourth Proportional to 372,725, 559,174.98 and 123,407

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Solution

The fourth proportional to 372,725, 559,174.98 and 123,407 is: 185,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,725 : 559,174.98 = 123,407 : x
  2. Step 2: Convert to fraction form
    372,725/559,174.98 = 123,407/x
  3. Step 3: Cross multiply
    372,725x = 559,174.98 × 123,407
  4. Step 4: Simplify right side
    372,725x = 69,006,106,756.86
  5. Step 5: Solve for x
    x = 69,006,106,756.86/372,725
  6. Step 6: Final answer
    x = 185,139.46

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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.