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Finding the Fourth Proportional to 291,676.69, 402,514.10 and 157,540.69

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Solution

The fourth proportional to 291,676.69, 402,514.10 and 157,540.69 is: 217,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,676.69 : 402,514.10 = 157,540.69 : x
  2. Step 2: Convert to fraction form
    291,676.69/402,514.10 = 157,540.69/x
  3. Step 3: Cross multiply
    291,676.69x = 402,514.10 × 157,540.69
  4. Step 4: Simplify right side
    291,676.69x = 63,412,349,048.73
  5. Step 5: Solve for x
    x = 63,412,349,048.73/291,676.69
  6. Step 6: Final answer
    x = 217,406.30

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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.