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Finding the Fourth Proportional to 428,258.76, 590,972.40 and 237,260.76

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Solution

The fourth proportional to 428,258.76, 590,972.40 and 237,260.76 is: 327,406.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,258.76 : 590,972.40 = 237,260.76 : x
  2. Step 2: Convert to fraction form
    428,258.76/590,972.40 = 237,260.76/x
  3. Step 3: Cross multiply
    428,258.76x = 590,972.40 × 237,260.76
  4. Step 4: Simplify right side
    428,258.76x = 140,214,560,763.02
  5. Step 5: Solve for x
    x = 140,214,560,763.02/428,258.76
  6. Step 6: Final answer
    x = 327,406.17

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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.