Home / 291,111.47-436,667.20-80,749.41

Finding the Fourth Proportional to 291,111.47, 436,667.20 and 80,749.41

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Solution

The fourth proportional to 291,111.47, 436,667.20 and 80,749.41 is: 121,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,111.47 : 436,667.20 = 80,749.41 : x
  2. Step 2: Convert to fraction form
    291,111.47/436,667.20 = 80,749.41/x
  3. Step 3: Cross multiply
    291,111.47x = 436,667.20 × 80,749.41
  4. Step 4: Simplify right side
    291,111.47x = 35,260,617,381.19
  5. Step 5: Solve for x
    x = 35,260,617,381.19/291,111.47
  6. Step 6: Final answer
    x = 121,124.11

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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.