Home / 209,211.30-288,709.80-113,717.70

Finding the Fourth Proportional to 209,211.30, 288,709.80 and 113,717.70

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Solution

The fourth proportional to 209,211.30, 288,709.80 and 113,717.70 is: 156,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,211.30 : 288,709.80 = 113,717.70 : x
  2. Step 2: Convert to fraction form
    209,211.30/288,709.80 = 113,717.70/x
  3. Step 3: Cross multiply
    209,211.30x = 288,709.80 × 113,717.70
  4. Step 4: Simplify right side
    209,211.30x = 32,831,414,423.46
  5. Step 5: Solve for x
    x = 32,831,414,423.46/209,211.30
  6. Step 6: Final answer
    x = 156,929.45

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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.