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Finding the Fourth Proportional to 385,727.34, 532,300.23 and 215,964.30

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Solution

The fourth proportional to 385,727.34, 532,300.23 and 215,964.30 is: 298,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,727.34 : 532,300.23 = 215,964.30 : x
  2. Step 2: Convert to fraction form
    385,727.34/532,300.23 = 215,964.30/x
  3. Step 3: Cross multiply
    385,727.34x = 532,300.23 × 215,964.30
  4. Step 4: Simplify right side
    385,727.34x = 114,957,846,561.79
  5. Step 5: Solve for x
    x = 114,957,846,561.79/385,727.34
  6. Step 6: Final answer
    x = 298,028.77

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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.