Home / 312,015,612.30-468,023,418.45-221,316,348.30

Finding the Fourth Proportional to 312,015,612.30, 468,023,418.45 and 221,316,348.30

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Solution

The fourth proportional to 312,015,612.30, 468,023,418.45 and 221,316,348.30 is: 331,974,522.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,015,612.30 : 468,023,418.45 = 221,316,348.30 : x
  2. Step 2: Convert to fraction form
    312,015,612.30/468,023,418.45 = 221,316,348.30/x
  3. Step 3: Cross multiply
    312,015,612.30x = 468,023,418.45 × 221,316,348.30
  4. Step 4: Simplify right side
    312,015,612.30x = 103,581,233,890,236,848
  5. Step 5: Solve for x
    x = 103,581,233,890,236,848/312,015,612.30
  6. Step 6: Final answer
    x = 331,974,522.45

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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.