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Finding the Fourth Proportional to 469,885.79, 648,443.03 and 255,025.87

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Solution

The fourth proportional to 469,885.79, 648,443.03 and 255,025.87 is: 351,936.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,885.79 : 648,443.03 = 255,025.87 : x
  2. Step 2: Convert to fraction form
    469,885.79/648,443.03 = 255,025.87/x
  3. Step 3: Cross multiply
    469,885.79x = 648,443.03 × 255,025.87
  4. Step 4: Simplify right side
    469,885.79x = 165,369,744,974.95
  5. Step 5: Solve for x
    x = 165,369,744,974.95/469,885.79
  6. Step 6: Final answer
    x = 351,936.04

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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.