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Finding the Fourth Proportional to 265,778,815.60, 398,668,223.40 and 265,778,815.60

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Solution

The fourth proportional to 265,778,815.60, 398,668,223.40 and 265,778,815.60 is: 398,668,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,778,815.60 : 398,668,223.40 = 265,778,815.60 : x
  2. Step 2: Convert to fraction form
    265,778,815.60/398,668,223.40 = 265,778,815.60/x
  3. Step 3: Cross multiply
    265,778,815.60x = 398,668,223.40 × 265,778,815.60
  4. Step 4: Simplify right side
    265,778,815.60x = 105,957,568,232,608,192
  5. Step 5: Solve for x
    x = 105,957,568,232,608,192/265,778,815.60
  6. Step 6: Final answer
    x = 398,668,223.40

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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.