Home / 212,931.26-318,732.53-156,834.71

Finding the Fourth Proportional to 212,931.26, 318,732.53 and 156,834.71

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Solution

The fourth proportional to 212,931.26, 318,732.53 and 156,834.71 is: 234,762.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,931.26 : 318,732.53 = 156,834.71 : x
  2. Step 2: Convert to fraction form
    212,931.26/318,732.53 = 156,834.71/x
  3. Step 3: Cross multiply
    212,931.26x = 318,732.53 × 156,834.71
  4. Step 4: Simplify right side
    212,931.26x = 49,988,321,532.28
  5. Step 5: Solve for x
    x = 49,988,321,532.28/212,931.26
  6. Step 6: Final answer
    x = 234,762.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.