Home / 513,200.72-708,199.07-280,633.05

Finding the Fourth Proportional to 513,200.72, 708,199.07 and 280,633.05

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Solution

The fourth proportional to 513,200.72, 708,199.07 and 280,633.05 is: 387,263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,200.72 : 708,199.07 = 280,633.05 : x
  2. Step 2: Convert to fraction form
    513,200.72/708,199.07 = 280,633.05/x
  3. Step 3: Cross multiply
    513,200.72x = 708,199.07 × 280,633.05
  4. Step 4: Simplify right side
    513,200.72x = 198,744,063,618.10
  5. Step 5: Solve for x
    x = 198,744,063,618.10/513,200.72
  6. Step 6: Final answer
    x = 387,263.80

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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.