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Finding the Fourth Proportional to 207,039.81, 310,559.90 and 64,896.20

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Solution

The fourth proportional to 207,039.81, 310,559.90 and 64,896.20 is: 97,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,039.81 : 310,559.90 = 64,896.20 : x
  2. Step 2: Convert to fraction form
    207,039.81/310,559.90 = 64,896.20/x
  3. Step 3: Cross multiply
    207,039.81x = 310,559.90 × 64,896.20
  4. Step 4: Simplify right side
    207,039.81x = 20,154,157,382.38
  5. Step 5: Solve for x
    x = 20,154,157,382.38/207,039.81
  6. Step 6: Final answer
    x = 97,344.36

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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.