Home / 280,910.72-387,561.83-159,966.26

Finding the Fourth Proportional to 280,910.72, 387,561.83 and 159,966.26

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Solution

The fourth proportional to 280,910.72, 387,561.83 and 159,966.26 is: 220,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,910.72 : 387,561.83 = 159,966.26 : x
  2. Step 2: Convert to fraction form
    280,910.72/387,561.83 = 159,966.26/x
  3. Step 3: Cross multiply
    280,910.72x = 387,561.83 × 159,966.26
  4. Step 4: Simplify right side
    280,910.72x = 61,996,816,463.86
  5. Step 5: Solve for x
    x = 61,996,816,463.86/280,910.72
  6. Step 6: Final answer
    x = 220,699.36

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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.