Home / 288,947.57-433,507.21-139,144.55

Finding the Fourth Proportional to 288,947.57, 433,507.21 and 139,144.55

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Solution

The fourth proportional to 288,947.57, 433,507.21 and 139,144.55 is: 208,758.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,947.57 : 433,507.21 = 139,144.55 : x
  2. Step 2: Convert to fraction form
    288,947.57/433,507.21 = 139,144.55/x
  3. Step 3: Cross multiply
    288,947.57x = 433,507.21 × 139,144.55
  4. Step 4: Simplify right side
    288,947.57x = 60,320,163,141.81
  5. Step 5: Solve for x
    x = 60,320,163,141.81/288,947.57
  6. Step 6: Final answer
    x = 208,758.16

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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.