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Finding the Fourth Proportional to 342,487.80, 472,637.52 and 213,478.38

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Solution

The fourth proportional to 342,487.80, 472,637.52 and 213,478.38 is: 294,602.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,487.80 : 472,637.52 = 213,478.38 : x
  2. Step 2: Convert to fraction form
    342,487.80/472,637.52 = 213,478.38/x
  3. Step 3: Cross multiply
    342,487.80x = 472,637.52 × 213,478.38
  4. Step 4: Simplify right side
    342,487.80x = 100,897,892,096.82
  5. Step 5: Solve for x
    x = 100,897,892,096.82/342,487.80
  6. Step 6: Final answer
    x = 294,602.88

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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.