Home / 280,955.72-387,710.24-172,101.44

Finding the Fourth Proportional to 280,955.72, 387,710.24 and 172,101.44

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Solution

The fourth proportional to 280,955.72, 387,710.24 and 172,101.44 is: 237,494.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,955.72 : 387,710.24 = 172,101.44 : x
  2. Step 2: Convert to fraction form
    280,955.72/387,710.24 = 172,101.44/x
  3. Step 3: Cross multiply
    280,955.72x = 387,710.24 × 172,101.44
  4. Step 4: Simplify right side
    280,955.72x = 66,725,490,715.51
  5. Step 5: Solve for x
    x = 66,725,490,715.51/280,955.72
  6. Step 6: Final answer
    x = 237,494.68

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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.