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Finding the Fourth Proportional to 307,688.51, 424,665.72 and 183,517.45

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Solution

The fourth proportional to 307,688.51, 424,665.72 and 183,517.45 is: 253,287.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,688.51 : 424,665.72 = 183,517.45 : x
  2. Step 2: Convert to fraction form
    307,688.51/424,665.72 = 183,517.45/x
  3. Step 3: Cross multiply
    307,688.51x = 424,665.72 × 183,517.45
  4. Step 4: Simplify right side
    307,688.51x = 77,933,568,975.15
  5. Step 5: Solve for x
    x = 77,933,568,975.15/307,688.51
  6. Step 6: Final answer
    x = 253,287.23

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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.