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Finding the Fourth Proportional to 403,005.90, 604,400.85 and 122,447.82

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Solution

The fourth proportional to 403,005.90, 604,400.85 and 122,447.82 is: 183,638.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,005.90 : 604,400.85 = 122,447.82 : x
  2. Step 2: Convert to fraction form
    403,005.90/604,400.85 = 122,447.82/x
  3. Step 3: Cross multiply
    403,005.90x = 604,400.85 × 122,447.82
  4. Step 4: Simplify right side
    403,005.90x = 74,007,566,488.65
  5. Step 5: Solve for x
    x = 74,007,566,488.65/403,005.90
  6. Step 6: Final answer
    x = 183,638.92

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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.