Home / 212,931.76-318,733.26-156,835.20

Finding the Fourth Proportional to 212,931.76, 318,733.26 and 156,835.20

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Solution

The fourth proportional to 212,931.76, 318,733.26 and 156,835.20 is: 234,763.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,931.76 : 318,733.26 = 156,835.20 : x
  2. Step 2: Convert to fraction form
    212,931.76/318,733.26 = 156,835.20/x
  3. Step 3: Cross multiply
    212,931.76x = 318,733.26 × 156,835.20
  4. Step 4: Simplify right side
    212,931.76x = 49,988,594,578.75
  5. Step 5: Solve for x
    x = 49,988,594,578.75/212,931.76
  6. Step 6: Final answer
    x = 234,763.45

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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.