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Finding the Fourth Proportional to 491,215.01, 736,780.29 and 299,039.55

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Solution

The fourth proportional to 491,215.01, 736,780.29 and 299,039.55 is: 448,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,215.01 : 736,780.29 = 299,039.55 : x
  2. Step 2: Convert to fraction form
    491,215.01/736,780.29 = 299,039.55/x
  3. Step 3: Cross multiply
    491,215.01x = 736,780.29 × 299,039.55
  4. Step 4: Simplify right side
    491,215.01x = 220,326,447,081.49
  5. Step 5: Solve for x
    x = 220,326,447,081.49/491,215.01
  6. Step 6: Final answer
    x = 448,533.63

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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.