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Finding the Fourth Proportional to 235,443.98, 352,818.60 and 139,281.76

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Solution

The fourth proportional to 235,443.98, 352,818.60 and 139,281.76 is: 208,717.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,443.98 : 352,818.60 = 139,281.76 : x
  2. Step 2: Convert to fraction form
    235,443.98/352,818.60 = 139,281.76/x
  3. Step 3: Cross multiply
    235,443.98x = 352,818.60 × 139,281.76
  4. Step 4: Simplify right side
    235,443.98x = 49,141,195,568.74
  5. Step 5: Solve for x
    x = 49,141,195,568.74/235,443.98
  6. Step 6: Final answer
    x = 208,717.15

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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.