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Finding the Fourth Proportional to 235,500.99, 324,988.30 and 128,068.71

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Solution

The fourth proportional to 235,500.99, 324,988.30 and 128,068.71 is: 176,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,500.99 : 324,988.30 = 128,068.71 : x
  2. Step 2: Convert to fraction form
    235,500.99/324,988.30 = 128,068.71/x
  3. Step 3: Cross multiply
    235,500.99x = 324,988.30 × 128,068.71
  4. Step 4: Simplify right side
    235,500.99x = 41,620,833,115.53
  5. Step 5: Solve for x
    x = 41,620,833,115.53/235,500.99
  6. Step 6: Final answer
    x = 176,733.16

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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.