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Finding the Fourth Proportional to 480,218.29, 720,451.98 and 255,393.86

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Solution

The fourth proportional to 480,218.29, 720,451.98 and 255,393.86 is: 383,157.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,218.29 : 720,451.98 = 255,393.86 : x
  2. Step 2: Convert to fraction form
    480,218.29/720,451.98 = 255,393.86/x
  3. Step 3: Cross multiply
    480,218.29x = 720,451.98 × 255,393.86
  4. Step 4: Simplify right side
    480,218.29x = 183,999,008,514.58
  5. Step 5: Solve for x
    x = 183,999,008,514.58/480,218.29
  6. Step 6: Final answer
    x = 383,157.02

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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.