Home / 282,753,918.39-390,203,998.32-155,609,235.61

Finding the Fourth Proportional to 282,753,918.39, 390,203,998.32 and 155,609,235.61

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Solution

The fourth proportional to 282,753,918.39, 390,203,998.32 and 155,609,235.61 is: 214,742,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,753,918.39 : 390,203,998.32 = 155,609,235.61 : x
  2. Step 2: Convert to fraction form
    282,753,918.39/390,203,998.32 = 155,609,235.61/x
  3. Step 3: Cross multiply
    282,753,918.39x = 390,203,998.32 × 155,609,235.61
  4. Step 4: Simplify right side
    282,753,918.39x = 60,719,345,910,540,928
  5. Step 5: Solve for x
    x = 60,719,345,910,540,928/282,753,918.39
  6. Step 6: Final answer
    x = 214,742,721.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.