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Finding the Fourth Proportional to 243,852.80, 336,514.56 and 136,421.76

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Solution

The fourth proportional to 243,852.80, 336,514.56 and 136,421.76 is: 188,260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,852.80 : 336,514.56 = 136,421.76 : x
  2. Step 2: Convert to fraction form
    243,852.80/336,514.56 = 136,421.76/x
  3. Step 3: Cross multiply
    243,852.80x = 336,514.56 × 136,421.76
  4. Step 4: Simplify right side
    243,852.80x = 45,907,908,540.83
  5. Step 5: Solve for x
    x = 45,907,908,540.83/243,852.80
  6. Step 6: Final answer
    x = 188,260.74

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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.