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Finding the Fourth Proportional to 229,079.40, 343,878.30 and 135,637.80

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Solution

The fourth proportional to 229,079.40, 343,878.30 and 135,637.80 is: 203,610.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,079.40 : 343,878.30 = 135,637.80 : x
  2. Step 2: Convert to fraction form
    229,079.40/343,878.30 = 135,637.80/x
  3. Step 3: Cross multiply
    229,079.40x = 343,878.30 × 135,637.80
  4. Step 4: Simplify right side
    229,079.40x = 46,642,896,079.74
  5. Step 5: Solve for x
    x = 46,642,896,079.74/229,079.40
  6. Step 6: Final answer
    x = 203,610.17

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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.