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Finding the Fourth Proportional to 478,732.17, 660,638.70 and 263,867.52

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Solution

The fourth proportional to 478,732.17, 660,638.70 and 263,867.52 is: 364,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,732.17 : 660,638.70 = 263,867.52 : x
  2. Step 2: Convert to fraction form
    478,732.17/660,638.70 = 263,867.52/x
  3. Step 3: Cross multiply
    478,732.17x = 660,638.70 × 263,867.52
  4. Step 4: Simplify right side
    478,732.17x = 174,321,095,385.02
  5. Step 5: Solve for x
    x = 174,321,095,385.02/478,732.17
  6. Step 6: Final answer
    x = 364,130.73

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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.