Home / 280,583.10-387,108.63-159,694.11

Finding the Fourth Proportional to 280,583.10, 387,108.63 and 159,694.11

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Solution

The fourth proportional to 280,583.10, 387,108.63 and 159,694.11 is: 220,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,583.10 : 387,108.63 = 159,694.11 : x
  2. Step 2: Convert to fraction form
    280,583.10/387,108.63 = 159,694.11/x
  3. Step 3: Cross multiply
    280,583.10x = 387,108.63 × 159,694.11
  4. Step 4: Simplify right side
    280,583.10x = 61,818,968,141.17
  5. Step 5: Solve for x
    x = 61,818,968,141.17/280,583.10
  6. Step 6: Final answer
    x = 220,323.21

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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.