Home / 208,931.90-288,325.20-113,438.56

Finding the Fourth Proportional to 208,931.90, 288,325.20 and 113,438.56

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Solution

The fourth proportional to 208,931.90, 288,325.20 and 113,438.56 is: 156,544.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,931.90 : 288,325.20 = 113,438.56 : x
  2. Step 2: Convert to fraction form
    208,931.90/288,325.20 = 113,438.56/x
  3. Step 3: Cross multiply
    208,931.90x = 288,325.20 × 113,438.56
  4. Step 4: Simplify right side
    208,931.90x = 32,707,195,499.71
  5. Step 5: Solve for x
    x = 32,707,195,499.71/208,931.90
  6. Step 6: Final answer
    x = 156,544.77

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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.