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Finding the Fourth Proportional to 313,617.78, 432,795.58 and 170,378.85

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Solution

The fourth proportional to 313,617.78, 432,795.58 and 170,378.85 is: 235,124.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,617.78 : 432,795.58 = 170,378.85 : x
  2. Step 2: Convert to fraction form
    313,617.78/432,795.58 = 170,378.85/x
  3. Step 3: Cross multiply
    313,617.78x = 432,795.58 × 170,378.85
  4. Step 4: Simplify right side
    313,617.78x = 73,739,212,779.54
  5. Step 5: Solve for x
    x = 73,739,212,779.54/313,617.78
  6. Step 6: Final answer
    x = 235,124.47

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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.