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Finding the Fourth Proportional to 454,575.54, 681,817.95 and 139,035.18

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Solution

The fourth proportional to 454,575.54, 681,817.95 and 139,035.18 is: 208,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,575.54 : 681,817.95 = 139,035.18 : x
  2. Step 2: Convert to fraction form
    454,575.54/681,817.95 = 139,035.18/x
  3. Step 3: Cross multiply
    454,575.54x = 681,817.95 × 139,035.18
  4. Step 4: Simplify right side
    454,575.54x = 94,796,681,405.48
  5. Step 5: Solve for x
    x = 94,796,681,405.48/454,575.54
  6. Step 6: Final answer
    x = 208,538.90

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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.