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Finding the Fourth Proportional to 206,817.80, 310,457.10 and 113,505.80

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Solution

The fourth proportional to 206,817.80, 310,457.10 and 113,505.80 is: 170,385.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,817.80 : 310,457.10 = 113,505.80 : x
  2. Step 2: Convert to fraction form
    206,817.80/310,457.10 = 113,505.80/x
  3. Step 3: Cross multiply
    206,817.80x = 310,457.10 × 113,505.80
  4. Step 4: Simplify right side
    206,817.80x = 35,238,681,501.18
  5. Step 5: Solve for x
    x = 35,238,681,501.18/206,817.80
  6. Step 6: Final answer
    x = 170,385.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.