Home / 249,488,019-374,267,195.19-76,978,858.68

Finding the Fourth Proportional to 249,488,019, 374,267,195.19 and 76,978,858.68

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Solution

The fourth proportional to 249,488,019, 374,267,195.19 and 76,978,858.68 is: 115,479,138.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,488,019 : 374,267,195.19 = 76,978,858.68 : x
  2. Step 2: Convert to fraction form
    249,488,019/374,267,195.19 = 76,978,858.68/x
  3. Step 3: Cross multiply
    249,488,019x = 374,267,195.19 × 76,978,858.68
  4. Step 4: Simplify right side
    249,488,019x = 28,810,661,527,090,988
  5. Step 5: Solve for x
    x = 28,810,661,527,090,988/249,488,019
  6. Step 6: Final answer
    x = 115,479,138.61

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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.