Home / 209,685.15-289,377.66-157,909.53

Finding the Fourth Proportional to 209,685.15, 289,377.66 and 157,909.53

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Solution

The fourth proportional to 209,685.15, 289,377.66 and 157,909.53 is: 217,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,685.15 : 289,377.66 = 157,909.53 : x
  2. Step 2: Convert to fraction form
    209,685.15/289,377.66 = 157,909.53/x
  3. Step 3: Cross multiply
    209,685.15x = 289,377.66 × 157,909.53
  4. Step 4: Simplify right side
    209,685.15x = 45,695,490,283.10
  5. Step 5: Solve for x
    x = 45,695,490,283.10/209,685.15
  6. Step 6: Final answer
    x = 217,924.30

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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.