Home / 326,947.07-490,429.80-90,289.75

Finding the Fourth Proportional to 326,947.07, 490,429.80 and 90,289.75

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Solution

The fourth proportional to 326,947.07, 490,429.80 and 90,289.75 is: 135,437.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,947.07 : 490,429.80 = 90,289.75 : x
  2. Step 2: Convert to fraction form
    326,947.07/490,429.80 = 90,289.75/x
  3. Step 3: Cross multiply
    326,947.07x = 490,429.80 × 90,289.75
  4. Step 4: Simplify right side
    326,947.07x = 44,280,781,582.40
  5. Step 5: Solve for x
    x = 44,280,781,582.40/326,947.07
  6. Step 6: Final answer
    x = 135,437.16

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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.