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Finding the Fourth Proportional to 480,233.88, 720,124.74 and 280,611.90

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Solution

The fourth proportional to 480,233.88, 720,124.74 and 280,611.90 is: 420,785.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,233.88 : 720,124.74 = 280,611.90 : x
  2. Step 2: Convert to fraction form
    480,233.88/720,124.74 = 280,611.90/x
  3. Step 3: Cross multiply
    480,233.88x = 720,124.74 × 280,611.90
  4. Step 4: Simplify right side
    480,233.88x = 202,075,571,528.41
  5. Step 5: Solve for x
    x = 202,075,571,528.41/480,233.88
  6. Step 6: Final answer
    x = 420,785.75

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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.