Home / 280,362.18-386,897.16-172,889.22

Finding the Fourth Proportional to 280,362.18, 386,897.16 and 172,889.22

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Solution

The fourth proportional to 280,362.18, 386,897.16 and 172,889.22 is: 238,585.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,362.18 : 386,897.16 = 172,889.22 : x
  2. Step 2: Convert to fraction form
    280,362.18/386,897.16 = 172,889.22/x
  3. Step 3: Cross multiply
    280,362.18x = 386,897.16 × 172,889.22
  4. Step 4: Simplify right side
    280,362.18x = 66,890,348,212.62
  5. Step 5: Solve for x
    x = 66,890,348,212.62/280,362.18
  6. Step 6: Final answer
    x = 238,585.49

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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.