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Finding the Fourth Proportional to 313,538.71, 432,686.60 and 170,301.55

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Solution

The fourth proportional to 313,538.71, 432,686.60 and 170,301.55 is: 235,017.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,538.71 : 432,686.60 = 170,301.55 : x
  2. Step 2: Convert to fraction form
    313,538.71/432,686.60 = 170,301.55/x
  3. Step 3: Cross multiply
    313,538.71x = 432,686.60 × 170,301.55
  4. Step 4: Simplify right side
    313,538.71x = 73,687,197,792.72
  5. Step 5: Solve for x
    x = 73,687,197,792.72/313,538.71
  6. Step 6: Final answer
    x = 235,017.86

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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.