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Finding the Fourth Proportional to 479,707.76, 719,436.18 and 142,657.58

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Solution

The fourth proportional to 479,707.76, 719,436.18 and 142,657.58 is: 213,949.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,707.76 : 719,436.18 = 142,657.58 : x
  2. Step 2: Convert to fraction form
    479,707.76/719,436.18 = 142,657.58/x
  3. Step 3: Cross multiply
    479,707.76x = 719,436.18 × 142,657.58
  4. Step 4: Simplify right side
    479,707.76x = 102,633,024,403.24
  5. Step 5: Solve for x
    x = 102,633,024,403.24/479,707.76
  6. Step 6: Final answer
    x = 213,949.06

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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.