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Finding the Third Proportional to 258,314,209.88 and 398,890,555.88

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Solution

The third proportional to 258,314,209.88 and 398,890,555.88 is: 615,969,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,314,209.88 : 398,890,555.88 = 398,890,555.88 : x
  2. Step 2: Convert to fraction form
    258,314,209.88/398,890,555.88 = 398,890,555.88/x
  3. Step 3: Cross multiply
    258,314,209.88x = 398,890,555.88 × 398,890,555.88
  4. Step 4: Simplify right side
    258,314,209.88x = 159,113,675,566,266,496
  5. Step 5: Solve for x
    x = 159,113,675,566,266,496/258,314,209.88
  6. Step 6: Final answer
    x = 615,969,503.36

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.