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Finding the Fourth Proportional to 215,737.70, 323,606.55 and 121,259.30

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Solution

The fourth proportional to 215,737.70, 323,606.55 and 121,259.30 is: 181,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,737.70 : 323,606.55 = 121,259.30 : x
  2. Step 2: Convert to fraction form
    215,737.70/323,606.55 = 121,259.30/x
  3. Step 3: Cross multiply
    215,737.70x = 323,606.55 × 121,259.30
  4. Step 4: Simplify right side
    215,737.70x = 39,240,303,728.42
  5. Step 5: Solve for x
    x = 39,240,303,728.42/215,737.70
  6. Step 6: Final answer
    x = 181,888.95

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1.5x scale

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.