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Finding the Fourth Proportional to 230,300.08, 317,809.28 and 128,325.12

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Solution

The fourth proportional to 230,300.08, 317,809.28 and 128,325.12 is: 177,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,300.08 : 317,809.28 = 128,325.12 : x
  2. Step 2: Convert to fraction form
    230,300.08/317,809.28 = 128,325.12/x
  3. Step 3: Cross multiply
    230,300.08x = 317,809.28 × 128,325.12
  4. Step 4: Simplify right side
    230,300.08x = 40,782,913,993.11
  5. Step 5: Solve for x
    x = 40,782,913,993.11/230,300.08
  6. Step 6: Final answer
    x = 177,085.97

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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.