Home / 317,911.20-476,865.57-81,253.50

Finding the Fourth Proportional to 317,911.20, 476,865.57 and 81,253.50

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Solution

The fourth proportional to 317,911.20, 476,865.57 and 81,253.50 is: 121,879.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,911.20 : 476,865.57 = 81,253.50 : x
  2. Step 2: Convert to fraction form
    317,911.20/476,865.57 = 81,253.50/x
  3. Step 3: Cross multiply
    317,911.20x = 476,865.57 × 81,253.50
  4. Step 4: Simplify right side
    317,911.20x = 38,746,996,592.00
  5. Step 5: Solve for x
    x = 38,746,996,592.00/317,911.20
  6. Step 6: Final answer
    x = 121,879.94

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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.