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Finding the Fourth Proportional to 305,888.78, 422,114.76 and 169,931.27

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Solution

The fourth proportional to 305,888.78, 422,114.76 and 169,931.27 is: 234,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,888.78 : 422,114.76 = 169,931.27 : x
  2. Step 2: Convert to fraction form
    305,888.78/422,114.76 = 169,931.27/x
  3. Step 3: Cross multiply
    305,888.78x = 422,114.76 × 169,931.27
  4. Step 4: Simplify right side
    305,888.78x = 71,730,495,141.97
  5. Step 5: Solve for x
    x = 71,730,495,141.97/305,888.78
  6. Step 6: Final answer
    x = 234,498.62

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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.