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Finding the Fourth Proportional to 262,590.30, 393,885.45 and 258,216.30

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Solution

The fourth proportional to 262,590.30, 393,885.45 and 258,216.30 is: 387,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,590.30 : 393,885.45 = 258,216.30 : x
  2. Step 2: Convert to fraction form
    262,590.30/393,885.45 = 258,216.30/x
  3. Step 3: Cross multiply
    262,590.30x = 393,885.45 × 258,216.30
  4. Step 4: Simplify right side
    262,590.30x = 101,707,643,522.84
  5. Step 5: Solve for x
    x = 101,707,643,522.84/262,590.30
  6. Step 6: Final answer
    x = 387,324.45

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Similar ratio
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1.5x scale

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.