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Finding the Fourth Proportional to 262,040.80, 392,542.80 and 243,378.40

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Solution

The fourth proportional to 262,040.80, 392,542.80 and 243,378.40 is: 364,586.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,040.80 : 392,542.80 = 243,378.40 : x
  2. Step 2: Convert to fraction form
    262,040.80/392,542.80 = 243,378.40/x
  3. Step 3: Cross multiply
    262,040.80x = 392,542.80 × 243,378.40
  4. Step 4: Simplify right side
    262,040.80x = 95,536,438,595.52
  5. Step 5: Solve for x
    x = 95,536,438,595.52/262,040.80
  6. Step 6: Final answer
    x = 364,586.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.