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Finding the Fourth Proportional to 212,354.74, 318,729.03 and 107,247.46

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Solution

The fourth proportional to 212,354.74, 318,729.03 and 107,247.46 is: 160,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,354.74 : 318,729.03 = 107,247.46 : x
  2. Step 2: Convert to fraction form
    212,354.74/318,729.03 = 107,247.46/x
  3. Step 3: Cross multiply
    212,354.74x = 318,729.03 × 107,247.46
  4. Step 4: Simplify right side
    212,354.74x = 34,182,878,895.76
  5. Step 5: Solve for x
    x = 34,182,878,895.76/212,354.74
  6. Step 6: Final answer
    x = 160,970.64

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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.