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Finding the Fourth Proportional to 313,538.96, 432,686.94 and 170,301.80

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Solution

The fourth proportional to 313,538.96, 432,686.94 and 170,301.80 is: 235,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,538.96 : 432,686.94 = 170,301.80 : x
  2. Step 2: Convert to fraction form
    313,538.96/432,686.94 = 170,301.80/x
  3. Step 3: Cross multiply
    313,538.96x = 432,686.94 × 170,301.80
  4. Step 4: Simplify right side
    313,538.96x = 73,687,364,718.49
  5. Step 5: Solve for x
    x = 73,687,364,718.49/313,538.96
  6. Step 6: Final answer
    x = 235,018.21

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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.