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Finding the Fourth Proportional to 287,953.37, 431,993.07 and 88,289.33

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Solution

The fourth proportional to 287,953.37, 431,993.07 and 88,289.33 is: 132,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,953.37 : 431,993.07 = 88,289.33 : x
  2. Step 2: Convert to fraction form
    287,953.37/431,993.07 = 88,289.33/x
  3. Step 3: Cross multiply
    287,953.37x = 431,993.07 × 88,289.33
  4. Step 4: Simplify right side
    287,953.37x = 38,140,376,554.98
  5. Step 5: Solve for x
    x = 38,140,376,554.98/287,953.37
  6. Step 6: Final answer
    x = 132,453.31

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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.