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Finding the Fourth Proportional to 503,689.40, 755,616.12 and 148,739.30

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Solution

The fourth proportional to 503,689.40, 755,616.12 and 148,739.30 is: 223,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,689.40 : 755,616.12 = 148,739.30 : x
  2. Step 2: Convert to fraction form
    503,689.40/755,616.12 = 148,739.30/x
  3. Step 3: Cross multiply
    503,689.40x = 755,616.12 × 148,739.30
  4. Step 4: Simplify right side
    503,689.40x = 112,389,812,757.52
  5. Step 5: Solve for x
    x = 112,389,812,757.52/503,689.40
  6. Step 6: Final answer
    x = 223,133.17

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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.