Home / 280,981.60-387,791.76-160,166.56

Finding the Fourth Proportional to 280,981.60, 387,791.76 and 160,166.56

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Solution

The fourth proportional to 280,981.60, 387,791.76 and 160,166.56 is: 221,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,981.60 : 387,791.76 = 160,166.56 : x
  2. Step 2: Convert to fraction form
    280,981.60/387,791.76 = 160,166.56/x
  3. Step 3: Cross multiply
    280,981.60x = 387,791.76 × 160,166.56
  4. Step 4: Simplify right side
    280,981.60x = 62,111,272,195.55
  5. Step 5: Solve for x
    x = 62,111,272,195.55/280,981.60
  6. Step 6: Final answer
    x = 221,051.03

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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.