Home / 280,483.28-387,076.20-153,168.56

Finding the Fourth Proportional to 280,483.28, 387,076.20 and 153,168.56

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Solution

The fourth proportional to 280,483.28, 387,076.20 and 153,168.56 is: 211,377.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,483.28 : 387,076.20 = 153,168.56 : x
  2. Step 2: Convert to fraction form
    280,483.28/387,076.20 = 153,168.56/x
  3. Step 3: Cross multiply
    280,483.28x = 387,076.20 × 153,168.56
  4. Step 4: Simplify right side
    280,483.28x = 59,287,904,164.27
  5. Step 5: Solve for x
    x = 59,287,904,164.27/280,483.28
  6. Step 6: Final answer
    x = 211,377.68

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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.