Home / 212,787,519.60-319,181,279.40-76,486,681.20

Finding the Fourth Proportional to 212,787,519.60, 319,181,279.40 and 76,486,681.20

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Solution

The fourth proportional to 212,787,519.60, 319,181,279.40 and 76,486,681.20 is: 114,730,021.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,787,519.60 : 319,181,279.40 = 76,486,681.20 : x
  2. Step 2: Convert to fraction form
    212,787,519.60/319,181,279.40 = 76,486,681.20/x
  3. Step 3: Cross multiply
    212,787,519.60x = 319,181,279.40 × 76,486,681.20
  4. Step 4: Simplify right side
    212,787,519.60x = 24,413,116,762,475,928
  5. Step 5: Solve for x
    x = 24,413,116,762,475,928/212,787,519.60
  6. Step 6: Final answer
    x = 114,730,021.80

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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.