Home / 288,947.80-433,130.10-131,289.40

Finding the Fourth Proportional to 288,947.80, 433,130.10 and 131,289.40

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Solution

The fourth proportional to 288,947.80, 433,130.10 and 131,289.40 is: 196,801.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,947.80 : 433,130.10 = 131,289.40 : x
  2. Step 2: Convert to fraction form
    288,947.80/433,130.10 = 131,289.40/x
  3. Step 3: Cross multiply
    288,947.80x = 433,130.10 × 131,289.40
  4. Step 4: Simplify right side
    288,947.80x = 56,865,390,950.94
  5. Step 5: Solve for x
    x = 56,865,390,950.94/288,947.80
  6. Step 6: Final answer
    x = 196,801.61

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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.