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Finding the Fourth Proportional to 512,254.90, 768,382.35 and 276,058.90

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Solution

The fourth proportional to 512,254.90, 768,382.35 and 276,058.90 is: 414,088.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,254.90 : 768,382.35 = 276,058.90 : x
  2. Step 2: Convert to fraction form
    512,254.90/768,382.35 = 276,058.90/x
  3. Step 3: Cross multiply
    512,254.90x = 768,382.35 × 276,058.90
  4. Step 4: Simplify right side
    512,254.90x = 212,118,786,320.42
  5. Step 5: Solve for x
    x = 212,118,786,320.42/512,254.90
  6. Step 6: Final answer
    x = 414,088.35

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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.