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Finding the Fourth Proportional to 230,531, 318,132.78 and 124,547

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Solution

The fourth proportional to 230,531, 318,132.78 and 124,547 is: 171,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,531 : 318,132.78 = 124,547 : x
  2. Step 2: Convert to fraction form
    230,531/318,132.78 = 124,547/x
  3. Step 3: Cross multiply
    230,531x = 318,132.78 × 124,547
  4. Step 4: Simplify right side
    230,531x = 39,622,483,350.66
  5. Step 5: Solve for x
    x = 39,622,483,350.66/230,531
  6. Step 6: Final answer
    x = 171,874.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.