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Finding the Fourth Proportional to 450,891, 676,440.18 and 155,403

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Solution

The fourth proportional to 450,891, 676,440.18 and 155,403 is: 233,140.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,891 : 676,440.18 = 155,403 : x
  2. Step 2: Convert to fraction form
    450,891/676,440.18 = 155,403/x
  3. Step 3: Cross multiply
    450,891x = 676,440.18 × 155,403
  4. Step 4: Simplify right side
    450,891x = 105,120,833,292.54
  5. Step 5: Solve for x
    x = 105,120,833,292.54/450,891
  6. Step 6: Final answer
    x = 233,140.23

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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.