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Finding the Fourth Proportional to 538,461.60, 807,685.20 and 164,486.40

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Solution

The fourth proportional to 538,461.60, 807,685.20 and 164,486.40 is: 246,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,461.60 : 807,685.20 = 164,486.40 : x
  2. Step 2: Convert to fraction form
    538,461.60/807,685.20 = 164,486.40/x
  3. Step 3: Cross multiply
    538,461.60x = 807,685.20 × 164,486.40
  4. Step 4: Simplify right side
    538,461.60x = 132,853,230,881.28
  5. Step 5: Solve for x
    x = 132,853,230,881.28/538,461.60
  6. Step 6: Final answer
    x = 246,727.40

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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.