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Finding the Fourth Proportional to 421,152.96, 581,219.20 and 237,436.88

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Solution

The fourth proportional to 421,152.96, 581,219.20 and 237,436.88 is: 327,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,152.96 : 581,219.20 = 237,436.88 : x
  2. Step 2: Convert to fraction form
    421,152.96/581,219.20 = 237,436.88/x
  3. Step 3: Cross multiply
    421,152.96x = 581,219.20 × 237,436.88
  4. Step 4: Simplify right side
    421,152.96x = 138,002,873,444.10
  5. Step 5: Solve for x
    x = 138,002,873,444.10/421,152.96
  6. Step 6: Final answer
    x = 327,678.75

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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.