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Finding the Fourth Proportional to 212,306.76, 318,477.49 and 60,515.53

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Solution

The fourth proportional to 212,306.76, 318,477.49 and 60,515.53 is: 90,778.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,306.76 : 318,477.49 = 60,515.53 : x
  2. Step 2: Convert to fraction form
    212,306.76/318,477.49 = 60,515.53/x
  3. Step 3: Cross multiply
    212,306.76x = 318,477.49 × 60,515.53
  4. Step 4: Simplify right side
    212,306.76x = 19,272,833,152.94
  5. Step 5: Solve for x
    x = 19,272,833,152.94/212,306.76
  6. Step 6: Final answer
    x = 90,778.24

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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.