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Finding the Fourth Proportional to 311,030.20, 466,457.82 and 86,336.20

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Solution

The fourth proportional to 311,030.20, 466,457.82 and 86,336.20 is: 129,480.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,030.20 : 466,457.82 = 86,336.20 : x
  2. Step 2: Convert to fraction form
    311,030.20/466,457.82 = 86,336.20/x
  3. Step 3: Cross multiply
    311,030.20x = 466,457.82 × 86,336.20
  4. Step 4: Simplify right side
    311,030.20x = 40,272,195,639.08
  5. Step 5: Solve for x
    x = 40,272,195,639.08/311,030.20
  6. Step 6: Final answer
    x = 129,480.02

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1.5x scale

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.