Home / 280,397.42-387,087.18-173,026.58

Finding the Fourth Proportional to 280,397.42, 387,087.18 and 173,026.58

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Solution

The fourth proportional to 280,397.42, 387,087.18 and 173,026.58 is: 238,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,397.42 : 387,087.18 = 173,026.58 : x
  2. Step 2: Convert to fraction form
    280,397.42/387,087.18 = 173,026.58/x
  3. Step 3: Cross multiply
    280,397.42x = 387,087.18 × 173,026.58
  4. Step 4: Simplify right side
    280,397.42x = 66,976,370,917.24
  5. Step 5: Solve for x
    x = 66,976,370,917.24/280,397.42
  6. Step 6: Final answer
    x = 238,862.29

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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.