Home / 212,515.16-318,772.37-145,752.91

Finding the Fourth Proportional to 212,515.16, 318,772.37 and 145,752.91

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Solution

The fourth proportional to 212,515.16, 318,772.37 and 145,752.91 is: 218,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,515.16 : 318,772.37 = 145,752.91 : x
  2. Step 2: Convert to fraction form
    212,515.16/318,772.37 = 145,752.91/x
  3. Step 3: Cross multiply
    212,515.16x = 318,772.37 × 145,752.91
  4. Step 4: Simplify right side
    212,515.16x = 46,462,000,122.55
  5. Step 5: Solve for x
    x = 46,462,000,122.55/212,515.16
  6. Step 6: Final answer
    x = 218,629.11

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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.