Home / 315,789.57-435,789.72-170,595.41

Finding the Fourth Proportional to 315,789.57, 435,789.72 and 170,595.41

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Solution

The fourth proportional to 315,789.57, 435,789.72 and 170,595.41 is: 235,421.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,789.57 : 435,789.72 = 170,595.41 : x
  2. Step 2: Convert to fraction form
    315,789.57/435,789.72 = 170,595.41/x
  3. Step 3: Cross multiply
    315,789.57x = 435,789.72 × 170,595.41
  4. Step 4: Simplify right side
    315,789.57x = 74,343,723,778.24
  5. Step 5: Solve for x
    x = 74,343,723,778.24/315,789.57
  6. Step 6: Final answer
    x = 235,421.72

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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.