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Finding the Fourth Proportional to 428,473.40, 591,311.95 and 237,486.94

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Solution

The fourth proportional to 428,473.40, 591,311.95 and 237,486.94 is: 327,742.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,473.40 : 591,311.95 = 237,486.94 : x
  2. Step 2: Convert to fraction form
    428,473.40/591,311.95 = 237,486.94/x
  3. Step 3: Cross multiply
    428,473.40x = 591,311.95 × 237,486.94
  4. Step 4: Simplify right side
    428,473.40x = 140,428,863,518.94
  5. Step 5: Solve for x
    x = 140,428,863,518.94/428,473.40
  6. Step 6: Final answer
    x = 327,742.32

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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.