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Finding the Fourth Proportional to 319,241.52, 478,862.28 and 108,881.28

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Solution

The fourth proportional to 319,241.52, 478,862.28 and 108,881.28 is: 163,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,241.52 : 478,862.28 = 108,881.28 : x
  2. Step 2: Convert to fraction form
    319,241.52/478,862.28 = 108,881.28/x
  3. Step 3: Cross multiply
    319,241.52x = 478,862.28 × 108,881.28
  4. Step 4: Simplify right side
    319,241.52x = 52,139,137,990.12
  5. Step 5: Solve for x
    x = 52,139,137,990.12/319,241.52
  6. Step 6: Final answer
    x = 163,321.92

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1.5x scale

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.