Home / 287,944.27-431,979.43-88,280.23

Finding the Fourth Proportional to 287,944.27, 431,979.43 and 88,280.23

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Solution

The fourth proportional to 287,944.27, 431,979.43 and 88,280.23 is: 132,439.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,944.27 : 431,979.43 = 88,280.23 : x
  2. Step 2: Convert to fraction form
    287,944.27/431,979.43 = 88,280.23/x
  3. Step 3: Cross multiply
    287,944.27x = 431,979.43 × 88,280.23
  4. Step 4: Simplify right side
    287,944.27x = 38,135,243,110.51
  5. Step 5: Solve for x
    x = 38,135,243,110.51/287,944.27
  6. Step 6: Final answer
    x = 132,439.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.