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Finding the Fourth Proportional to 215,156.55, 296,911.81 and 119,661.20

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Solution

The fourth proportional to 215,156.55, 296,911.81 and 119,661.20 is: 165,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,156.55 : 296,911.81 = 119,661.20 : x
  2. Step 2: Convert to fraction form
    215,156.55/296,911.81 = 119,661.20/x
  3. Step 3: Cross multiply
    215,156.55x = 296,911.81 × 119,661.20
  4. Step 4: Simplify right side
    215,156.55x = 35,528,823,257.21
  5. Step 5: Solve for x
    x = 35,528,823,257.21/215,156.55
  6. Step 6: Final answer
    x = 165,130.10

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1.5x scale

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.