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Finding the Fourth Proportional to 230,362.36, 317,925.88 and 128,397.12

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Solution

The fourth proportional to 230,362.36, 317,925.88 and 128,397.12 is: 177,202.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,362.36 : 317,925.88 = 128,397.12 : x
  2. Step 2: Convert to fraction form
    230,362.36/317,925.88 = 128,397.12/x
  3. Step 3: Cross multiply
    230,362.36x = 317,925.88 × 128,397.12
  4. Step 4: Simplify right side
    230,362.36x = 40,820,767,365.47
  5. Step 5: Solve for x
    x = 40,820,767,365.47/230,362.36
  6. Step 6: Final answer
    x = 177,202.42

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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.