Home / 280,809.32-387,539.94-159,988.52

Finding the Fourth Proportional to 280,809.32, 387,539.94 and 159,988.52

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Solution

The fourth proportional to 280,809.32, 387,539.94 and 159,988.52 is: 220,797.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,809.32 : 387,539.94 = 159,988.52 : x
  2. Step 2: Convert to fraction form
    280,809.32/387,539.94 = 159,988.52/x
  3. Step 3: Cross multiply
    280,809.32x = 387,539.94 × 159,988.52
  4. Step 4: Simplify right side
    280,809.32x = 62,001,941,441.49
  5. Step 5: Solve for x
    x = 62,001,941,441.49/280,809.32
  6. Step 6: Final answer
    x = 220,797.31

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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.