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Finding the Fourth Proportional to 265,367,620.40, 398,051,430.60 and 265,367,620.40

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Solution

The fourth proportional to 265,367,620.40, 398,051,430.60 and 265,367,620.40 is: 398,051,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,367,620.40 : 398,051,430.60 = 265,367,620.40 : x
  2. Step 2: Convert to fraction form
    265,367,620.40/398,051,430.60 = 265,367,620.40/x
  3. Step 3: Cross multiply
    265,367,620.40x = 398,051,430.60 × 265,367,620.40
  4. Step 4: Simplify right side
    265,367,620.40x = 105,629,960,935,137,760
  5. Step 5: Solve for x
    x = 105,629,960,935,137,760/265,367,620.40
  6. Step 6: Final answer
    x = 398,051,430.60

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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.