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Finding the Fourth Proportional to 281,211.48, 388,071.54 and 158,695.74

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Solution

The fourth proportional to 281,211.48, 388,071.54 and 158,695.74 is: 218,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,211.48 : 388,071.54 = 158,695.74 : x
  2. Step 2: Convert to fraction form
    281,211.48/388,071.54 = 158,695.74/x
  3. Step 3: Cross multiply
    281,211.48x = 388,071.54 × 158,695.74
  4. Step 4: Simplify right side
    281,211.48x = 61,585,300,213.24
  5. Step 5: Solve for x
    x = 61,585,300,213.24/281,211.48
  6. Step 6: Final answer
    x = 218,999.95

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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.