Home / 687,379.02-1,031,138.76-238,099.06

Finding the Fourth Proportional to 687,379.02, 1,031,138.76 and 238,099.06

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Solution

The fourth proportional to 687,379.02, 1,031,138.76 and 238,099.06 is: 357,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,379.02 : 1,031,138.76 = 238,099.06 : x
  2. Step 2: Convert to fraction form
    687,379.02/1,031,138.76 = 238,099.06/x
  3. Step 3: Cross multiply
    687,379.02x = 1,031,138.76 × 238,099.06
  4. Step 4: Simplify right side
    687,379.02x = 245,513,164,193.06
  5. Step 5: Solve for x
    x = 245,513,164,193.06/687,379.02
  6. Step 6: Final answer
    x = 357,172.91

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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.