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Finding the Fourth Proportional to 545,439.80, 818,097.06 and 208,472.96

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Solution

The fourth proportional to 545,439.80, 818,097.06 and 208,472.96 is: 312,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,439.80 : 818,097.06 = 208,472.96 : x
  2. Step 2: Convert to fraction form
    545,439.80/818,097.06 = 208,472.96/x
  3. Step 3: Cross multiply
    545,439.80x = 818,097.06 × 208,472.96
  4. Step 4: Simplify right side
    545,439.80x = 170,551,115,665.50
  5. Step 5: Solve for x
    x = 170,551,115,665.50/545,439.80
  6. Step 6: Final answer
    x = 312,685.50

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1.5x scale

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.