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Finding the Fourth Proportional to 342,431.28, 472,569.08 and 189,466.98

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Solution

The fourth proportional to 342,431.28, 472,569.08 and 189,466.98 is: 261,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,431.28 : 472,569.08 = 189,466.98 : x
  2. Step 2: Convert to fraction form
    342,431.28/472,569.08 = 189,466.98/x
  3. Step 3: Cross multiply
    342,431.28x = 472,569.08 × 189,466.98
  4. Step 4: Simplify right side
    342,431.28x = 89,536,236,428.98
  5. Step 5: Solve for x
    x = 89,536,236,428.98/342,431.28
  6. Step 6: Final answer
    x = 261,472.13

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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.