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Finding the Fourth Proportional to 338,501.76, 507,766.56 and 279,227.04

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Solution

The fourth proportional to 338,501.76, 507,766.56 and 279,227.04 is: 418,852.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,501.76 : 507,766.56 = 279,227.04 : x
  2. Step 2: Convert to fraction form
    338,501.76/507,766.56 = 279,227.04/x
  3. Step 3: Cross multiply
    338,501.76x = 507,766.56 × 279,227.04
  4. Step 4: Simplify right side
    338,501.76x = 141,782,153,559.78
  5. Step 5: Solve for x
    x = 141,782,153,559.78/338,501.76
  6. Step 6: Final answer
    x = 418,852.04

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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.