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Finding the Fourth Proportional to 469,987.50, 648,583.56 and 255,127.74

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Solution

The fourth proportional to 469,987.50, 648,583.56 and 255,127.74 is: 352,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,987.50 : 648,583.56 = 255,127.74 : x
  2. Step 2: Convert to fraction form
    469,987.50/648,583.56 = 255,127.74/x
  3. Step 3: Cross multiply
    469,987.50x = 648,583.56 × 255,127.74
  4. Step 4: Simplify right side
    469,987.50x = 165,471,657,863.95
  5. Step 5: Solve for x
    x = 165,471,657,863.95/469,987.50
  6. Step 6: Final answer
    x = 352,076.72

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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.