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Finding the Fourth Proportional to 381,683.40, 572,525.10 and 275,929.80

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Solution

The fourth proportional to 381,683.40, 572,525.10 and 275,929.80 is: 413,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,683.40 : 572,525.10 = 275,929.80 : x
  2. Step 2: Convert to fraction form
    381,683.40/572,525.10 = 275,929.80/x
  3. Step 3: Cross multiply
    381,683.40x = 572,525.10 × 275,929.80
  4. Step 4: Simplify right side
    381,683.40x = 157,976,736,337.98
  5. Step 5: Solve for x
    x = 157,976,736,337.98/381,683.40
  6. Step 6: Final answer
    x = 413,894.70

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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.