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Finding the Fourth Proportional to 310,251.06, 428,099.79 and 174,258.93

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Solution

The fourth proportional to 310,251.06, 428,099.79 and 174,258.93 is: 240,451.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,251.06 : 428,099.79 = 174,258.93 : x
  2. Step 2: Convert to fraction form
    310,251.06/428,099.79 = 174,258.93/x
  3. Step 3: Cross multiply
    310,251.06x = 428,099.79 × 174,258.93
  4. Step 4: Simplify right side
    310,251.06x = 74,600,211,338.62
  5. Step 5: Solve for x
    x = 74,600,211,338.62/310,251.06
  6. Step 6: Final answer
    x = 240,451.11

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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.