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Finding the Fourth Proportional to 391,058.10, 587,024.55 and 302,703.30

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Solution

The fourth proportional to 391,058.10, 587,024.55 and 302,703.30 is: 454,393.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,058.10 : 587,024.55 = 302,703.30 : x
  2. Step 2: Convert to fraction form
    391,058.10/587,024.55 = 302,703.30/x
  3. Step 3: Cross multiply
    391,058.10x = 587,024.55 × 302,703.30
  4. Step 4: Simplify right side
    391,058.10x = 177,694,268,466.02
  5. Step 5: Solve for x
    x = 177,694,268,466.02/391,058.10
  6. Step 6: Final answer
    x = 454,393.52

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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.