Home / 385,003.64-531,306.20-215,237.76

Finding the Fourth Proportional to 385,003.64, 531,306.20 and 215,237.76

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Solution

The fourth proportional to 385,003.64, 531,306.20 and 215,237.76 is: 297,028.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,003.64 : 531,306.20 = 215,237.76 : x
  2. Step 2: Convert to fraction form
    385,003.64/531,306.20 = 215,237.76/x
  3. Step 3: Cross multiply
    385,003.64x = 531,306.20 × 215,237.76
  4. Step 4: Simplify right side
    385,003.64x = 114,357,156,362.11
  5. Step 5: Solve for x
    x = 114,357,156,362.11/385,003.64
  6. Step 6: Final answer
    x = 297,028.77

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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.