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Finding the Fourth Proportional to 545,139.29, 817,741.76 and 171,162.29

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Solution

The fourth proportional to 545,139.29, 817,741.76 and 171,162.29 is: 256,753.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,139.29 : 817,741.76 = 171,162.29 : x
  2. Step 2: Convert to fraction form
    545,139.29/817,741.76 = 171,162.29/x
  3. Step 3: Cross multiply
    545,139.29x = 817,741.76 × 171,162.29
  4. Step 4: Simplify right side
    545,139.29x = 139,966,553,458.77
  5. Step 5: Solve for x
    x = 139,966,553,458.77/545,139.29
  6. Step 6: Final answer
    x = 256,753.74

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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.