Home / 280,565.36-387,180.18-153,241.25

Finding the Fourth Proportional to 280,565.36, 387,180.18 and 153,241.25

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Solution

The fourth proportional to 280,565.36, 387,180.18 and 153,241.25 is: 211,472.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,565.36 : 387,180.18 = 153,241.25 : x
  2. Step 2: Convert to fraction form
    280,565.36/387,180.18 = 153,241.25/x
  3. Step 3: Cross multiply
    280,565.36x = 387,180.18 × 153,241.25
  4. Step 4: Simplify right side
    280,565.36x = 59,331,972,822.52
  5. Step 5: Solve for x
    x = 59,331,972,822.52/280,565.36
  6. Step 6: Final answer
    x = 211,472.91

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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.