Home / 280,471.57-387,050.75-153,147.28

Finding the Fourth Proportional to 280,471.57, 387,050.75 and 153,147.28

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Solution

The fourth proportional to 280,471.57, 387,050.75 and 153,147.28 is: 211,343.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,471.57 : 387,050.75 = 153,147.28 : x
  2. Step 2: Convert to fraction form
    280,471.57/387,050.75 = 153,147.28/x
  3. Step 3: Cross multiply
    280,471.57x = 387,050.75 × 153,147.28
  4. Step 4: Simplify right side
    280,471.57x = 59,275,768,818.72
  5. Step 5: Solve for x
    x = 59,275,768,818.72/280,471.57
  6. Step 6: Final answer
    x = 211,343.23

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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.