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Finding the Fourth Proportional to 402,454.80, 603,682.20 and 192,502.80

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Solution

The fourth proportional to 402,454.80, 603,682.20 and 192,502.80 is: 288,754.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,454.80 : 603,682.20 = 192,502.80 : x
  2. Step 2: Convert to fraction form
    402,454.80/603,682.20 = 192,502.80/x
  3. Step 3: Cross multiply
    402,454.80x = 603,682.20 × 192,502.80
  4. Step 4: Simplify right side
    402,454.80x = 116,210,513,810.16
  5. Step 5: Solve for x
    x = 116,210,513,810.16/402,454.80
  6. Step 6: Final answer
    x = 288,754.20

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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.