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Finding the Fourth Proportional to 545,314.17, 817,959.26 and 145,954.91

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Solution

The fourth proportional to 545,314.17, 817,959.26 and 145,954.91 is: 218,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,314.17 : 817,959.26 = 145,954.91 : x
  2. Step 2: Convert to fraction form
    545,314.17/817,959.26 = 145,954.91/x
  3. Step 3: Cross multiply
    545,314.17x = 817,959.26 × 145,954.91
  4. Step 4: Simplify right side
    545,314.17x = 119,385,172,586.75
  5. Step 5: Solve for x
    x = 119,385,172,586.75/545,314.17
  6. Step 6: Final answer
    x = 218,929.16

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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.