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Finding the Fourth Proportional to 207,210.12, 310,815.12 and 137,073.03

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Solution

The fourth proportional to 207,210.12, 310,815.12 and 137,073.03 is: 205,609.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,210.12 : 310,815.12 = 137,073.03 : x
  2. Step 2: Convert to fraction form
    207,210.12/310,815.12 = 137,073.03/x
  3. Step 3: Cross multiply
    207,210.12x = 310,815.12 × 137,073.03
  4. Step 4: Simplify right side
    207,210.12x = 42,604,370,268.21
  5. Step 5: Solve for x
    x = 42,604,370,268.21/207,210.12
  6. Step 6: Final answer
    x = 205,609.51

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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.