Home / 215,206.18-296,986.78-118,411.28

Finding the Fourth Proportional to 215,206.18, 296,986.78 and 118,411.28

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Solution

The fourth proportional to 215,206.18, 296,986.78 and 118,411.28 is: 163,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,206.18 : 296,986.78 = 118,411.28 : x
  2. Step 2: Convert to fraction form
    215,206.18/296,986.78 = 118,411.28/x
  3. Step 3: Cross multiply
    215,206.18x = 296,986.78 × 118,411.28
  4. Step 4: Simplify right side
    215,206.18x = 35,166,584,762.88
  5. Step 5: Solve for x
    x = 35,166,584,762.88/215,206.18
  6. Step 6: Final answer
    x = 163,408.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.