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Finding the Fourth Proportional to 656,639.80, 984,959.70 and 235,929.40

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Solution

The fourth proportional to 656,639.80, 984,959.70 and 235,929.40 is: 353,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,639.80 : 984,959.70 = 235,929.40 : x
  2. Step 2: Convert to fraction form
    656,639.80/984,959.70 = 235,929.40/x
  3. Step 3: Cross multiply
    656,639.80x = 984,959.70 × 235,929.40
  4. Step 4: Simplify right side
    656,639.80x = 232,380,951,045.18
  5. Step 5: Solve for x
    x = 232,380,951,045.18/656,639.80
  6. Step 6: Final answer
    x = 353,894.10

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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.