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Finding the Fourth Proportional to 296,742.72, 445,033.44 and 86,326.08

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Solution

The fourth proportional to 296,742.72, 445,033.44 and 86,326.08 is: 129,465.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,742.72 : 445,033.44 = 86,326.08 : x
  2. Step 2: Convert to fraction form
    296,742.72/445,033.44 = 86,326.08/x
  3. Step 3: Cross multiply
    296,742.72x = 445,033.44 × 86,326.08
  4. Step 4: Simplify right side
    296,742.72x = 38,417,992,344.12
  5. Step 5: Solve for x
    x = 38,417,992,344.12/296,742.72
  6. Step 6: Final answer
    x = 129,465.66

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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.