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Finding the Fourth Proportional to 306,508.32, 423,000.48 and 170,572.56

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Solution

The fourth proportional to 306,508.32, 423,000.48 and 170,572.56 is: 235,400.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,508.32 : 423,000.48 = 170,572.56 : x
  2. Step 2: Convert to fraction form
    306,508.32/423,000.48 = 170,572.56/x
  3. Step 3: Cross multiply
    306,508.32x = 423,000.48 × 170,572.56
  4. Step 4: Simplify right side
    306,508.32x = 72,152,274,754.83
  5. Step 5: Solve for x
    x = 72,152,274,754.83/306,508.32
  6. Step 6: Final answer
    x = 235,400.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.