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Finding the Fourth Proportional to 545,248.50, 817,947.27 and 190,209.30

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Solution

The fourth proportional to 545,248.50, 817,947.27 and 190,209.30 is: 285,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,248.50 : 817,947.27 = 190,209.30 : x
  2. Step 2: Convert to fraction form
    545,248.50/817,947.27 = 190,209.30/x
  3. Step 3: Cross multiply
    545,248.50x = 817,947.27 × 190,209.30
  4. Step 4: Simplify right side
    545,248.50x = 155,581,177,663.61
  5. Step 5: Solve for x
    x = 155,581,177,663.61/545,248.50
  6. Step 6: Final answer
    x = 285,339.95

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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.