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Finding the Fourth Proportional to 474,983.40, 712,521.80 and 138,026.96

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Solution

The fourth proportional to 474,983.40, 712,521.80 and 138,026.96 is: 207,054.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,983.40 : 712,521.80 = 138,026.96 : x
  2. Step 2: Convert to fraction form
    474,983.40/712,521.80 = 138,026.96/x
  3. Step 3: Cross multiply
    474,983.40x = 712,521.80 × 138,026.96
  4. Step 4: Simplify right side
    474,983.40x = 98,347,217,987.73
  5. Step 5: Solve for x
    x = 98,347,217,987.73/474,983.40
  6. Step 6: Final answer
    x = 207,054.01

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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.