Home / 212,869,968.60-319,304,952.90-189,911,717.40

Finding the Fourth Proportional to 212,869,968.60, 319,304,952.90 and 189,911,717.40

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Solution

The fourth proportional to 212,869,968.60, 319,304,952.90 and 189,911,717.40 is: 284,867,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,869,968.60 : 319,304,952.90 = 189,911,717.40 : x
  2. Step 2: Convert to fraction form
    212,869,968.60/319,304,952.90 = 189,911,717.40/x
  3. Step 3: Cross multiply
    212,869,968.60x = 319,304,952.90 × 189,911,717.40
  4. Step 4: Simplify right side
    212,869,968.60x = 60,639,751,979,565,104
  5. Step 5: Solve for x
    x = 60,639,751,979,565,104/212,869,968.60
  6. Step 6: Final answer
    x = 284,867,576.10

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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.