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Finding the Fourth Proportional to 265,720,658.20, 398,580,987.30 and 265,720,658.20

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Solution

The fourth proportional to 265,720,658.20, 398,580,987.30 and 265,720,658.20 is: 398,580,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,720,658.20 : 398,580,987.30 = 265,720,658.20 : x
  2. Step 2: Convert to fraction form
    265,720,658.20/398,580,987.30 = 265,720,658.20/x
  3. Step 3: Cross multiply
    265,720,658.20x = 398,580,987.30 × 265,720,658.20
  4. Step 4: Simplify right side
    265,720,658.20x = 105,911,202,291,361,840
  5. Step 5: Solve for x
    x = 105,911,202,291,361,840/265,720,658.20
  6. Step 6: Final answer
    x = 398,580,987.30

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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.