Home / 345,058.12-517,670.22-145,435.60

Finding the Fourth Proportional to 345,058.12, 517,670.22 and 145,435.60

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Solution

The fourth proportional to 345,058.12, 517,670.22 and 145,435.60 is: 218,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,058.12 : 517,670.22 = 145,435.60 : x
  2. Step 2: Convert to fraction form
    345,058.12/517,670.22 = 145,435.60/x
  3. Step 3: Cross multiply
    345,058.12x = 517,670.22 × 145,435.60
  4. Step 4: Simplify right side
    345,058.12x = 75,287,676,459.48
  5. Step 5: Solve for x
    x = 75,287,676,459.48/345,058.12
  6. Step 6: Final answer
    x = 218,188.40

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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.