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Finding the Fourth Proportional to 342,783.12, 473,034.78 and 189,818.28

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Solution

The fourth proportional to 342,783.12, 473,034.78 and 189,818.28 is: 261,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,783.12 : 473,034.78 = 189,818.28 : x
  2. Step 2: Convert to fraction form
    342,783.12/473,034.78 = 189,818.28/x
  3. Step 3: Cross multiply
    342,783.12x = 473,034.78 × 189,818.28
  4. Step 4: Simplify right side
    342,783.12x = 89,790,648,319.78
  5. Step 5: Solve for x
    x = 89,790,648,319.78/342,783.12
  6. Step 6: Final answer
    x = 261,945.95

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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.