Home / 209,225.32-288,729.10-113,731.72

Finding the Fourth Proportional to 209,225.32, 288,729.10 and 113,731.72

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Solution

The fourth proportional to 209,225.32, 288,729.10 and 113,731.72 is: 156,948.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,225.32 : 288,729.10 = 113,731.72 : x
  2. Step 2: Convert to fraction form
    209,225.32/288,729.10 = 113,731.72/x
  3. Step 3: Cross multiply
    209,225.32x = 288,729.10 × 113,731.72
  4. Step 4: Simplify right side
    209,225.32x = 32,837,657,157.05
  5. Step 5: Solve for x
    x = 32,837,657,157.05/209,225.32
  6. Step 6: Final answer
    x = 156,948.77

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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.