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Finding the Fourth Proportional to 573,309.10, 859,639.65 and 218,334.70

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Solution

The fourth proportional to 573,309.10, 859,639.65 and 218,334.70 is: 327,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,309.10 : 859,639.65 = 218,334.70 : x
  2. Step 2: Convert to fraction form
    573,309.10/859,639.65 = 218,334.70/x
  3. Step 3: Cross multiply
    573,309.10x = 859,639.65 × 218,334.70
  4. Step 4: Simplify right side
    573,309.10x = 187,689,165,090.86
  5. Step 5: Solve for x
    x = 187,689,165,090.86/573,309.10
  6. Step 6: Final answer
    x = 327,378.66

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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.