Home / 316,913.50-475,371.06-80,256.20

Finding the Fourth Proportional to 316,913.50, 475,371.06 and 80,256.20

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Solution

The fourth proportional to 316,913.50, 475,371.06 and 80,256.20 is: 120,384.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,913.50 : 475,371.06 = 80,256.20 : x
  2. Step 2: Convert to fraction form
    316,913.50/475,371.06 = 80,256.20/x
  3. Step 3: Cross multiply
    316,913.50x = 475,371.06 × 80,256.20
  4. Step 4: Simplify right side
    316,913.50x = 38,151,475,753.04
  5. Step 5: Solve for x
    x = 38,151,475,753.04/316,913.50
  6. Step 6: Final answer
    x = 120,384.51

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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.