Home / 230,456.05-318,030.61-128,487.87

Finding the Fourth Proportional to 230,456.05, 318,030.61 and 128,487.87

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Solution

The fourth proportional to 230,456.05, 318,030.61 and 128,487.87 is: 177,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,456.05 : 318,030.61 = 128,487.87 : x
  2. Step 2: Convert to fraction form
    230,456.05/318,030.61 = 128,487.87/x
  3. Step 3: Cross multiply
    230,456.05x = 318,030.61 × 128,487.87
  4. Step 4: Simplify right side
    230,456.05x = 40,863,075,673.70
  5. Step 5: Solve for x
    x = 40,863,075,673.70/230,456.05
  6. Step 6: Final answer
    x = 177,313.96

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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.