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Finding the Fourth Proportional to 304,639.56, 420,402.54 and 170,503.56

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Solution

The fourth proportional to 304,639.56, 420,402.54 and 170,503.56 is: 235,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,639.56 : 420,402.54 = 170,503.56 : x
  2. Step 2: Convert to fraction form
    304,639.56/420,402.54 = 170,503.56/x
  3. Step 3: Cross multiply
    304,639.56x = 420,402.54 × 170,503.56
  4. Step 4: Simplify right side
    304,639.56x = 71,680,129,703.04
  5. Step 5: Solve for x
    x = 71,680,129,703.04/304,639.56
  6. Step 6: Final answer
    x = 235,294.88

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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.