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Finding the Fourth Proportional to 235,948.98, 325,614.59 and 128,518.76

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Solution

The fourth proportional to 235,948.98, 325,614.59 and 128,518.76 is: 177,358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,948.98 : 325,614.59 = 128,518.76 : x
  2. Step 2: Convert to fraction form
    235,948.98/325,614.59 = 128,518.76/x
  3. Step 3: Cross multiply
    235,948.98x = 325,614.59 × 128,518.76
  4. Step 4: Simplify right side
    235,948.98x = 41,847,583,344.71
  5. Step 5: Solve for x
    x = 41,847,583,344.71/235,948.98
  6. Step 6: Final answer
    x = 177,358.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.