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Finding the Fourth Proportional to 571,124.80, 856,689.12 and 144,660.48

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Solution

The fourth proportional to 571,124.80, 856,689.12 and 144,660.48 is: 216,991.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,124.80 : 856,689.12 = 144,660.48 : x
  2. Step 2: Convert to fraction form
    571,124.80/856,689.12 = 144,660.48/x
  3. Step 3: Cross multiply
    571,124.80x = 856,689.12 × 144,660.48
  4. Step 4: Simplify right side
    571,124.80x = 123,929,059,309.98
  5. Step 5: Solve for x
    x = 123,929,059,309.98/571,124.80
  6. Step 6: Final answer
    x = 216,991.21

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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.