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Finding the Fourth Proportional to 243,830.39, 336,472.40 and 136,379.66

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Solution

The fourth proportional to 243,830.39, 336,472.40 and 136,379.66 is: 188,196.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,830.39 : 336,472.40 = 136,379.66 : x
  2. Step 2: Convert to fraction form
    243,830.39/336,472.40 = 136,379.66/x
  3. Step 3: Cross multiply
    243,830.39x = 336,472.40 × 136,379.66
  4. Step 4: Simplify right side
    243,830.39x = 45,887,990,349.16
  5. Step 5: Solve for x
    x = 45,887,990,349.16/243,830.39
  6. Step 6: Final answer
    x = 188,196.36

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1.5x scale

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.