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Finding the Fourth Proportional to 614,875.20, 921,875.40 and 235,649.40

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Solution

The fourth proportional to 614,875.20, 921,875.40 and 235,649.40 is: 353,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,875.20 : 921,875.40 = 235,649.40 : x
  2. Step 2: Convert to fraction form
    614,875.20/921,875.40 = 235,649.40/x
  3. Step 3: Cross multiply
    614,875.20x = 921,875.40 × 235,649.40
  4. Step 4: Simplify right side
    614,875.20x = 217,239,384,884.76
  5. Step 5: Solve for x
    x = 217,239,384,884.76/614,875.20
  6. Step 6: Final answer
    x = 353,306.47

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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.