Home / 287,945.27-431,980.93-88,281.23

Finding the Fourth Proportional to 287,945.27, 431,980.93 and 88,281.23

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Solution

The fourth proportional to 287,945.27, 431,980.93 and 88,281.23 is: 132,441.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,945.27 : 431,980.93 = 88,281.23 : x
  2. Step 2: Convert to fraction form
    287,945.27/431,980.93 = 88,281.23/x
  3. Step 3: Cross multiply
    287,945.27x = 431,980.93 × 88,281.23
  4. Step 4: Simplify right side
    287,945.27x = 38,135,807,836.94
  5. Step 5: Solve for x
    x = 38,135,807,836.94/287,945.27
  6. Step 6: Final answer
    x = 132,441.17

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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.