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Finding the Fourth Proportional to 428,384.16, 591,173.64 and 237,400.74

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Solution

The fourth proportional to 428,384.16, 591,173.64 and 237,400.74 is: 327,614.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,384.16 : 591,173.64 = 237,400.74 : x
  2. Step 2: Convert to fraction form
    428,384.16/591,173.64 = 237,400.74/x
  3. Step 3: Cross multiply
    428,384.16x = 591,173.64 × 237,400.74
  4. Step 4: Simplify right side
    428,384.16x = 140,345,059,604.49
  5. Step 5: Solve for x
    x = 140,345,059,604.49/428,384.16
  6. Step 6: Final answer
    x = 327,614.96

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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.