Home / 230,445.32-318,015.86-128,477.25

Finding the Fourth Proportional to 230,445.32, 318,015.86 and 128,477.25

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Solution

The fourth proportional to 230,445.32, 318,015.86 and 128,477.25 is: 177,299.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,445.32 : 318,015.86 = 128,477.25 : x
  2. Step 2: Convert to fraction form
    230,445.32/318,015.86 = 128,477.25/x
  3. Step 3: Cross multiply
    230,445.32x = 318,015.86 × 128,477.25
  4. Step 4: Simplify right side
    230,445.32x = 40,857,802,506.80
  5. Step 5: Solve for x
    x = 40,857,802,506.80/230,445.32
  6. Step 6: Final answer
    x = 177,299.34

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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.