Home / 280,772.13-387,464.61-153,447.69

Finding the Fourth Proportional to 280,772.13, 387,464.61 and 153,447.69

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Solution

The fourth proportional to 280,772.13, 387,464.61 and 153,447.69 is: 211,757.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,772.13 : 387,464.61 = 153,447.69 : x
  2. Step 2: Convert to fraction form
    280,772.13/387,464.61 = 153,447.69/x
  3. Step 3: Cross multiply
    280,772.13x = 387,464.61 × 153,447.69
  4. Step 4: Simplify right side
    280,772.13x = 59,455,549,361.25
  5. Step 5: Solve for x
    x = 59,455,549,361.25/280,772.13
  6. Step 6: Final answer
    x = 211,757.30

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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.