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Finding the Fourth Proportional to 372,645.60, 558,312.30 and 305,723.40

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Solution

The fourth proportional to 372,645.60, 558,312.30 and 305,723.40 is: 458,046.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,645.60 : 558,312.30 = 305,723.40 : x
  2. Step 2: Convert to fraction form
    372,645.60/558,312.30 = 305,723.40/x
  3. Step 3: Cross multiply
    372,645.60x = 558,312.30 × 305,723.40
  4. Step 4: Simplify right side
    372,645.60x = 170,689,134,617.82
  5. Step 5: Solve for x
    x = 170,689,134,617.82/372,645.60
  6. Step 6: Final answer
    x = 458,046.83

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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.