Home / 212,869,898.10-319,304,847.15-189,911,646.90

Finding the Fourth Proportional to 212,869,898.10, 319,304,847.15 and 189,911,646.90

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Solution

The fourth proportional to 212,869,898.10, 319,304,847.15 and 189,911,646.90 is: 284,867,470.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,869,898.10 : 319,304,847.15 = 189,911,646.90 : x
  2. Step 2: Convert to fraction form
    212,869,898.10/319,304,847.15 = 189,911,646.90/x
  3. Step 3: Cross multiply
    212,869,898.10x = 319,304,847.15 × 189,911,646.90
  4. Step 4: Simplify right side
    212,869,898.10x = 60,639,709,385,409,272
  5. Step 5: Solve for x
    x = 60,639,709,385,409,272/212,869,898.10
  6. Step 6: Final answer
    x = 284,867,470.35

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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.