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Finding the Fourth Proportional to 308,610.92, 425,923.98 and 172,697.24

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Solution

The fourth proportional to 308,610.92, 425,923.98 and 172,697.24 is: 238,345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,610.92 : 425,923.98 = 172,697.24 : x
  2. Step 2: Convert to fraction form
    308,610.92/425,923.98 = 172,697.24/x
  3. Step 3: Cross multiply
    308,610.92x = 425,923.98 × 172,697.24
  4. Step 4: Simplify right side
    308,610.92x = 73,555,895,795.82
  5. Step 5: Solve for x
    x = 73,555,895,795.82/308,610.92
  6. Step 6: Final answer
    x = 238,345.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.