Home / 280,720.69-387,394.04-159,862.01

Finding the Fourth Proportional to 280,720.69, 387,394.04 and 159,862.01

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Solution

The fourth proportional to 280,720.69, 387,394.04 and 159,862.01 is: 220,609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,720.69 : 387,394.04 = 159,862.01 : x
  2. Step 2: Convert to fraction form
    280,720.69/387,394.04 = 159,862.01/x
  3. Step 3: Cross multiply
    280,720.69x = 387,394.04 × 159,862.01
  4. Step 4: Simplify right side
    280,720.69x = 61,929,588,359.11
  5. Step 5: Solve for x
    x = 61,929,588,359.11/280,720.69
  6. Step 6: Final answer
    x = 220,609.28

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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.