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Finding the Fourth Proportional to 371,528.43, 557,116.99 and 143,930.65

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Solution

The fourth proportional to 371,528.43, 557,116.99 and 143,930.65 is: 215,827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,528.43 : 557,116.99 = 143,930.65 : x
  2. Step 2: Convert to fraction form
    371,528.43/557,116.99 = 143,930.65/x
  3. Step 3: Cross multiply
    371,528.43x = 557,116.99 × 143,930.65
  4. Step 4: Simplify right side
    371,528.43x = 80,186,210,496.74
  5. Step 5: Solve for x
    x = 80,186,210,496.74/371,528.43
  6. Step 6: Final answer
    x = 215,827.93

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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.