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Finding the Fourth Proportional to 545,038.80, 817,230.15 and 279,318.30

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Solution

The fourth proportional to 545,038.80, 817,230.15 and 279,318.30 is: 418,809.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,038.80 : 817,230.15 = 279,318.30 : x
  2. Step 2: Convert to fraction form
    545,038.80/817,230.15 = 279,318.30/x
  3. Step 3: Cross multiply
    545,038.80x = 817,230.15 × 279,318.30
  4. Step 4: Simplify right side
    545,038.80x = 228,267,336,206.75
  5. Step 5: Solve for x
    x = 228,267,336,206.75/545,038.80
  6. Step 6: Final answer
    x = 418,809.33

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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.