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Finding the Fourth Proportional to 230,449, 318,019.80 and 124,465

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Solution

The fourth proportional to 230,449, 318,019.80 and 124,465 is: 171,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,449 : 318,019.80 = 124,465 : x
  2. Step 2: Convert to fraction form
    230,449/318,019.80 = 124,465/x
  3. Step 3: Cross multiply
    230,449x = 318,019.80 × 124,465
  4. Step 4: Simplify right side
    230,449x = 39,582,334,407
  5. Step 5: Solve for x
    x = 39,582,334,407/230,449
  6. Step 6: Final answer
    x = 171,761.80

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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.