Home / 280,504.06-387,128.82-158,000.47

Finding the Fourth Proportional to 280,504.06, 387,128.82 and 158,000.47

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Solution

The fourth proportional to 280,504.06, 387,128.82 and 158,000.47 is: 218,059.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,504.06 : 387,128.82 = 158,000.47 : x
  2. Step 2: Convert to fraction form
    280,504.06/387,128.82 = 158,000.47/x
  3. Step 3: Cross multiply
    280,504.06x = 387,128.82 × 158,000.47
  4. Step 4: Simplify right side
    280,504.06x = 61,166,535,510.55
  5. Step 5: Solve for x
    x = 61,166,535,510.55/280,504.06
  6. Step 6: Final answer
    x = 218,059.36

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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.