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Finding the Fourth Proportional to 480,264.88, 720,171.18 and 280,642.96

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Solution

The fourth proportional to 480,264.88, 720,171.18 and 280,642.96 is: 420,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,264.88 : 720,171.18 = 280,642.96 : x
  2. Step 2: Convert to fraction form
    480,264.88/720,171.18 = 280,642.96/x
  3. Step 3: Cross multiply
    480,264.88x = 720,171.18 × 280,642.96
  4. Step 4: Simplify right side
    480,264.88x = 202,110,971,661.89
  5. Step 5: Solve for x
    x = 202,110,971,661.89/480,264.88
  6. Step 6: Final answer
    x = 420,832.30

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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.