Home / 291,919.78-402,849.30-157,783.78

Finding the Fourth Proportional to 291,919.78, 402,849.30 and 157,783.78

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Solution

The fourth proportional to 291,919.78, 402,849.30 and 157,783.78 is: 217,741.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,919.78 : 402,849.30 = 157,783.78 : x
  2. Step 2: Convert to fraction form
    291,919.78/402,849.30 = 157,783.78/x
  3. Step 3: Cross multiply
    291,919.78x = 402,849.30 × 157,783.78
  4. Step 4: Simplify right side
    291,919.78x = 63,563,085,324.35
  5. Step 5: Solve for x
    x = 63,563,085,324.35/291,919.78
  6. Step 6: Final answer
    x = 217,741.62

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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.