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Finding the Fourth Proportional to 428,411.48, 591,197.72 and 237,420.76

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Solution

The fourth proportional to 428,411.48, 591,197.72 and 237,420.76 is: 327,635.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,411.48 : 591,197.72 = 237,420.76 : x
  2. Step 2: Convert to fraction form
    428,411.48/591,197.72 = 237,420.76/x
  3. Step 3: Cross multiply
    428,411.48x = 591,197.72 × 237,420.76
  4. Step 4: Simplify right side
    428,411.48x = 140,362,611,992.67
  5. Step 5: Solve for x
    x = 140,362,611,992.67/428,411.48
  6. Step 6: Final answer
    x = 327,635.04

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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.