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Finding the Fourth Proportional to 318,809.88, 478,325.50 and 141,441.42

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Solution

The fourth proportional to 318,809.88, 478,325.50 and 141,441.42 is: 212,211.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,809.88 : 478,325.50 = 141,441.42 : x
  2. Step 2: Convert to fraction form
    318,809.88/478,325.50 = 141,441.42/x
  3. Step 3: Cross multiply
    318,809.88x = 478,325.50 × 141,441.42
  4. Step 4: Simplify right side
    318,809.88x = 67,655,037,942.21
  5. Step 5: Solve for x
    x = 67,655,037,942.21/318,809.88
  6. Step 6: Final answer
    x = 212,211.23

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1.5x scale

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.