Home / 208,010,729.60-312,053,419.20-86,854,428.80

Finding the Fourth Proportional to 208,010,729.60, 312,053,419.20 and 86,854,428.80

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Solution

The fourth proportional to 208,010,729.60, 312,053,419.20 and 86,854,428.80 is: 130,297,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,010,729.60 : 312,053,419.20 = 86,854,428.80 : x
  2. Step 2: Convert to fraction form
    208,010,729.60/312,053,419.20 = 86,854,428.80/x
  3. Step 3: Cross multiply
    208,010,729.60x = 312,053,419.20 × 86,854,428.80
  4. Step 4: Simplify right side
    208,010,729.60x = 27,103,221,479,702,952
  5. Step 5: Solve for x
    x = 27,103,221,479,702,952/208,010,729.60
  6. Step 6: Final answer
    x = 130,297,228.09

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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.