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Finding the Fourth Proportional to 403,730.80, 604,940.10 and 253,702.60

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Solution

The fourth proportional to 403,730.80, 604,940.10 and 253,702.60 is: 380,141.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,730.80 : 604,940.10 = 253,702.60 : x
  2. Step 2: Convert to fraction form
    403,730.80/604,940.10 = 253,702.60/x
  3. Step 3: Cross multiply
    403,730.80x = 604,940.10 × 253,702.60
  4. Step 4: Simplify right side
    403,730.80x = 153,474,876,214.26
  5. Step 5: Solve for x
    x = 153,474,876,214.26/403,730.80
  6. Step 6: Final answer
    x = 380,141.61

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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.