Home / 687,636.12-1,031,220.60-238,252.11

Finding the Fourth Proportional to 687,636.12, 1,031,220.60 and 238,252.11

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Solution

The fourth proportional to 687,636.12, 1,031,220.60 and 238,252.11 is: 357,297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,636.12 : 1,031,220.60 = 238,252.11 : x
  2. Step 2: Convert to fraction form
    687,636.12/1,031,220.60 = 238,252.11/x
  3. Step 3: Cross multiply
    687,636.12x = 1,031,220.60 × 238,252.11
  4. Step 4: Simplify right side
    687,636.12x = 245,690,483,825.47
  5. Step 5: Solve for x
    x = 245,690,483,825.47/687,636.12
  6. Step 6: Final answer
    x = 357,297.23

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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.