Home / 319,698,979.20-479,548,468.80-216,386,848.80

Finding the Fourth Proportional to 319,698,979.20, 479,548,468.80 and 216,386,848.80

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Solution

The fourth proportional to 319,698,979.20, 479,548,468.80 and 216,386,848.80 is: 324,580,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,698,979.20 : 479,548,468.80 = 216,386,848.80 : x
  2. Step 2: Convert to fraction form
    319,698,979.20/479,548,468.80 = 216,386,848.80/x
  3. Step 3: Cross multiply
    319,698,979.20x = 479,548,468.80 × 216,386,848.80
  4. Step 4: Simplify right side
    319,698,979.20x = 103,767,982,010,497,120
  5. Step 5: Solve for x
    x = 103,767,982,010,497,120/319,698,979.20
  6. Step 6: Final answer
    x = 324,580,273.20

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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.