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Finding the Fourth Proportional to 454,616.55, 681,900.11 and 139,073.45

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Solution

The fourth proportional to 454,616.55, 681,900.11 and 139,073.45 is: 208,602.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,616.55 : 681,900.11 = 139,073.45 : x
  2. Step 2: Convert to fraction form
    454,616.55/681,900.11 = 139,073.45/x
  3. Step 3: Cross multiply
    454,616.55x = 681,900.11 × 139,073.45
  4. Step 4: Simplify right side
    454,616.55x = 94,834,201,862.46
  5. Step 5: Solve for x
    x = 94,834,201,862.46/454,616.55
  6. Step 6: Final answer
    x = 208,602.62

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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.