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Finding the Fourth Proportional to 458,326.32, 687,478.92 and 269,981.49

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Solution

The fourth proportional to 458,326.32, 687,478.92 and 269,981.49 is: 404,966.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,326.32 : 687,478.92 = 269,981.49 : x
  2. Step 2: Convert to fraction form
    458,326.32/687,478.92 = 269,981.49/x
  3. Step 3: Cross multiply
    458,326.32x = 687,478.92 × 269,981.49
  4. Step 4: Simplify right side
    458,326.32x = 185,606,583,165.19
  5. Step 5: Solve for x
    x = 185,606,583,165.19/458,326.32
  6. Step 6: Final answer
    x = 404,966.01

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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.