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Finding the Fourth Proportional to 312,301.80, 468,382.55 and 143,660.16

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Solution

The fourth proportional to 312,301.80, 468,382.55 and 143,660.16 is: 215,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,301.80 : 468,382.55 = 143,660.16 : x
  2. Step 2: Convert to fraction form
    312,301.80/468,382.55 = 143,660.16/x
  3. Step 3: Cross multiply
    312,301.80x = 468,382.55 × 143,660.16
  4. Step 4: Simplify right side
    312,301.80x = 67,287,911,355.91
  5. Step 5: Solve for x
    x = 67,287,911,355.91/312,301.80
  6. Step 6: Final answer
    x = 215,457.97

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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.