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Finding the Fourth Proportional to 313,540.96, 432,689.70 and 170,303.80

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Solution

The fourth proportional to 313,540.96, 432,689.70 and 170,303.80 is: 235,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,540.96 : 432,689.70 = 170,303.80 : x
  2. Step 2: Convert to fraction form
    313,540.96/432,689.70 = 170,303.80/x
  3. Step 3: Cross multiply
    313,540.96x = 432,689.70 × 170,303.80
  4. Step 4: Simplify right side
    313,540.96x = 73,688,700,130.86
  5. Step 5: Solve for x
    x = 73,688,700,130.86/313,540.96
  6. Step 6: Final answer
    x = 235,020.97

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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.