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Finding the Fourth Proportional to 660,778.39, 991,320.41 and 234,291.61

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Solution

The fourth proportional to 660,778.39, 991,320.41 and 234,291.61 is: 351,491.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,778.39 : 991,320.41 = 234,291.61 : x
  2. Step 2: Convert to fraction form
    660,778.39/991,320.41 = 234,291.61/x
  3. Step 3: Cross multiply
    660,778.39x = 991,320.41 × 234,291.61
  4. Step 4: Simplify right side
    660,778.39x = 232,258,054,884.76
  5. Step 5: Solve for x
    x = 232,258,054,884.76/660,778.39
  6. Step 6: Final answer
    x = 351,491.60

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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.