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Finding the Fourth Proportional to 235,490.77, 324,979.58 and 128,063.13

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Solution

The fourth proportional to 235,490.77, 324,979.58 and 128,063.13 is: 176,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,490.77 : 324,979.58 = 128,063.13 : x
  2. Step 2: Convert to fraction form
    235,490.77/324,979.58 = 128,063.13/x
  3. Step 3: Cross multiply
    235,490.77x = 324,979.58 × 128,063.13
  4. Step 4: Simplify right side
    235,490.77x = 41,617,902,200.89
  5. Step 5: Solve for x
    x = 41,617,902,200.89/235,490.77
  6. Step 6: Final answer
    x = 176,728.38

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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.