Home / 280,548.81-387,151.38-153,224.91

Finding the Fourth Proportional to 280,548.81, 387,151.38 and 153,224.91

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Solution

The fourth proportional to 280,548.81, 387,151.38 and 153,224.91 is: 211,447.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,548.81 : 387,151.38 = 153,224.91 : x
  2. Step 2: Convert to fraction form
    280,548.81/387,151.38 = 153,224.91/x
  3. Step 3: Cross multiply
    280,548.81x = 387,151.38 × 153,224.91
  4. Step 4: Simplify right side
    280,548.81x = 59,321,235,356.88
  5. Step 5: Solve for x
    x = 59,321,235,356.88/280,548.81
  6. Step 6: Final answer
    x = 211,447.11

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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.