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Finding the Fourth Proportional to 403,012.60, 604,518.90 and 122,529.40

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Solution

The fourth proportional to 403,012.60, 604,518.90 and 122,529.40 is: 183,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,012.60 : 604,518.90 = 122,529.40 : x
  2. Step 2: Convert to fraction form
    403,012.60/604,518.90 = 122,529.40/x
  3. Step 3: Cross multiply
    403,012.60x = 604,518.90 × 122,529.40
  4. Step 4: Simplify right side
    403,012.60x = 74,071,338,105.66
  5. Step 5: Solve for x
    x = 74,071,338,105.66/403,012.60
  6. Step 6: Final answer
    x = 183,794.10

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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.