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Finding the Fourth Proportional to 454,562.66, 681,734.64 and 139,022.30

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Solution

The fourth proportional to 454,562.66, 681,734.64 and 139,022.30 is: 208,500.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,562.66 : 681,734.64 = 139,022.30 : x
  2. Step 2: Convert to fraction form
    454,562.66/681,734.64 = 139,022.30/x
  3. Step 3: Cross multiply
    454,562.66x = 681,734.64 × 139,022.30
  4. Step 4: Simplify right side
    454,562.66x = 94,776,319,346.81
  5. Step 5: Solve for x
    x = 94,776,319,346.81/454,562.66
  6. Step 6: Final answer
    x = 208,500.01

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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.