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Finding the Fourth Proportional to 480,263.88, 720,169.68 and 280,641.96

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Solution

The fourth proportional to 480,263.88, 720,169.68 and 280,641.96 is: 420,830.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,263.88 : 720,169.68 = 280,641.96 : x
  2. Step 2: Convert to fraction form
    480,263.88/720,169.68 = 280,641.96/x
  3. Step 3: Cross multiply
    480,263.88x = 720,169.68 × 280,641.96
  4. Step 4: Simplify right side
    480,263.88x = 202,109,830,527.77
  5. Step 5: Solve for x
    x = 202,109,830,527.77/480,263.88
  6. Step 6: Final answer
    x = 420,830.80

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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.