Home / 230,402.36-317,916.78-128,405.56

Finding the Fourth Proportional to 230,402.36, 317,916.78 and 128,405.56

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Solution

The fourth proportional to 230,402.36, 317,916.78 and 128,405.56 is: 177,178.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,402.36 : 317,916.78 = 128,405.56 : x
  2. Step 2: Convert to fraction form
    230,402.36/317,916.78 = 128,405.56/x
  3. Step 3: Cross multiply
    230,402.36x = 317,916.78 × 128,405.56
  4. Step 4: Simplify right side
    230,402.36x = 40,822,282,169.30
  5. Step 5: Solve for x
    x = 40,822,282,169.30/230,402.36
  6. Step 6: Final answer
    x = 177,178.23

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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.