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Finding the Fourth Proportional to 306,817.29, 423,422.10 and 170,860.01

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Solution

The fourth proportional to 306,817.29, 423,422.10 and 170,860.01 is: 235,794.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,817.29 : 423,422.10 = 170,860.01 : x
  2. Step 2: Convert to fraction form
    306,817.29/423,422.10 = 170,860.01/x
  3. Step 3: Cross multiply
    306,817.29x = 423,422.10 × 170,860.01
  4. Step 4: Simplify right side
    306,817.29x = 72,345,902,123.11
  5. Step 5: Solve for x
    x = 72,345,902,123.11/306,817.29
  6. Step 6: Final answer
    x = 235,794.74

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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.