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Finding the Fourth Proportional to 307,778,648.12, 461,668,890.68 and 74,608,435.52

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Solution

The fourth proportional to 307,778,648.12, 461,668,890.68 and 74,608,435.52 is: 111,912,875.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,778,648.12 : 461,668,890.68 = 74,608,435.52 : x
  2. Step 2: Convert to fraction form
    307,778,648.12/461,668,890.68 = 74,608,435.52/x
  3. Step 3: Cross multiply
    307,778,648.12x = 461,668,890.68 × 74,608,435.52
  4. Step 4: Simplify right side
    307,778,648.12x = 34,444,393,661,888,708
  5. Step 5: Solve for x
    x = 34,444,393,661,888,708/307,778,648.12
  6. Step 6: Final answer
    x = 111,912,875.93

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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.