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Finding the Fourth Proportional to 403,260.90, 604,891.35 and 328,611.30

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Solution

The fourth proportional to 403,260.90, 604,891.35 and 328,611.30 is: 492,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,260.90 : 604,891.35 = 328,611.30 : x
  2. Step 2: Convert to fraction form
    403,260.90/604,891.35 = 328,611.30/x
  3. Step 3: Cross multiply
    403,260.90x = 604,891.35 × 328,611.30
  4. Step 4: Simplify right side
    403,260.90x = 198,774,132,882.26
  5. Step 5: Solve for x
    x = 198,774,132,882.26/403,260.90
  6. Step 6: Final answer
    x = 492,916.95

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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.