Home / 661,214.12-991,239.42-262,135.40

Finding the Fourth Proportional to 661,214.12, 991,239.42 and 262,135.40

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Solution

The fourth proportional to 661,214.12, 991,239.42 and 262,135.40 is: 392,972.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,214.12 : 991,239.42 = 262,135.40 : x
  2. Step 2: Convert to fraction form
    661,214.12/991,239.42 = 262,135.40/x
  3. Step 3: Cross multiply
    661,214.12x = 991,239.42 × 262,135.40
  4. Step 4: Simplify right side
    661,214.12x = 259,838,941,857.47
  5. Step 5: Solve for x
    x = 259,838,941,857.47/661,214.12
  6. Step 6: Final answer
    x = 392,972.46

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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.