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Finding the Fourth Proportional to 342,785.62, 473,038.23 and 189,820.78

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Solution

The fourth proportional to 342,785.62, 473,038.23 and 189,820.78 is: 261,949.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,785.62 : 473,038.23 = 189,820.78 : x
  2. Step 2: Convert to fraction form
    342,785.62/473,038.23 = 189,820.78/x
  3. Step 3: Cross multiply
    342,785.62x = 473,038.23 × 189,820.78
  4. Step 4: Simplify right side
    342,785.62x = 89,792,485,788.42
  5. Step 5: Solve for x
    x = 89,792,485,788.42/342,785.62
  6. Step 6: Final answer
    x = 261,949.40

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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.