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Finding the Fourth Proportional to 458,601.24, 687,649.28 and 245,618.76

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Solution

The fourth proportional to 458,601.24, 687,649.28 and 245,618.76 is: 368,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,601.24 : 687,649.28 = 245,618.76 : x
  2. Step 2: Convert to fraction form
    458,601.24/687,649.28 = 245,618.76/x
  3. Step 3: Cross multiply
    458,601.24x = 687,649.28 × 245,618.76
  4. Step 4: Simplify right side
    458,601.24x = 168,899,563,468.49
  5. Step 5: Solve for x
    x = 168,899,563,468.49/458,601.24
  6. Step 6: Final answer
    x = 368,292.86

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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.