Home / 281,981.76-389,140.88-154,657.04

Finding the Fourth Proportional to 281,981.76, 389,140.88 and 154,657.04

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Solution

The fourth proportional to 281,981.76, 389,140.88 and 154,657.04 is: 213,430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,981.76 : 389,140.88 = 154,657.04 : x
  2. Step 2: Convert to fraction form
    281,981.76/389,140.88 = 154,657.04/x
  3. Step 3: Cross multiply
    281,981.76x = 389,140.88 × 154,657.04
  4. Step 4: Simplify right side
    281,981.76x = 60,183,376,643.80
  5. Step 5: Solve for x
    x = 60,183,376,643.80/281,981.76
  6. Step 6: Final answer
    x = 213,430.03

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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.