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Finding the Fourth Proportional to 469,925.50, 648,497.84 and 255,065.61

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Solution

The fourth proportional to 469,925.50, 648,497.84 and 255,065.61 is: 351,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,925.50 : 648,497.84 = 255,065.61 : x
  2. Step 2: Convert to fraction form
    469,925.50/648,497.84 = 255,065.61/x
  3. Step 3: Cross multiply
    469,925.50x = 648,497.84 × 255,065.61
  4. Step 4: Simplify right side
    469,925.50x = 165,409,497,143.28
  5. Step 5: Solve for x
    x = 165,409,497,143.28/469,925.50
  6. Step 6: Final answer
    x = 351,990.89

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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.