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Finding the Fourth Proportional to 491,054.40, 736,192.80 and 269,438.40

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Solution

The fourth proportional to 491,054.40, 736,192.80 and 269,438.40 is: 403,944.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,054.40 : 736,192.80 = 269,438.40 : x
  2. Step 2: Convert to fraction form
    491,054.40/736,192.80 = 269,438.40/x
  3. Step 3: Cross multiply
    491,054.40x = 736,192.80 × 269,438.40
  4. Step 4: Simplify right side
    491,054.40x = 198,358,610,123.52
  5. Step 5: Solve for x
    x = 198,358,610,123.52/491,054.40
  6. Step 6: Final answer
    x = 403,944.27

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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.