Home / 209,015.40-288,440.10-113,521.32

Finding the Fourth Proportional to 209,015.40, 288,440.10 and 113,521.32

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Solution

The fourth proportional to 209,015.40, 288,440.10 and 113,521.32 is: 156,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,015.40 : 288,440.10 = 113,521.32 : x
  2. Step 2: Convert to fraction form
    209,015.40/288,440.10 = 113,521.32/x
  3. Step 3: Cross multiply
    209,015.40x = 288,440.10 × 113,521.32
  4. Step 4: Simplify right side
    209,015.40x = 32,744,100,892.93
  5. Step 5: Solve for x
    x = 32,744,100,892.93/209,015.40
  6. Step 6: Final answer
    x = 156,658.80

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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.