Home / 212,458.20-318,701.70-72,227.40

Finding the Fourth Proportional to 212,458.20, 318,701.70 and 72,227.40

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Solution

The fourth proportional to 212,458.20, 318,701.70 and 72,227.40 is: 108,346.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,458.20 : 318,701.70 = 72,227.40 : x
  2. Step 2: Convert to fraction form
    212,458.20/318,701.70 = 72,227.40/x
  3. Step 3: Cross multiply
    212,458.20x = 318,701.70 × 72,227.40
  4. Step 4: Simplify right side
    212,458.20x = 23,018,995,166.58
  5. Step 5: Solve for x
    x = 23,018,995,166.58/212,458.20
  6. Step 6: Final answer
    x = 108,346.00

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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.