Home / 385,258.70-531,658.92-215,492.82

Finding the Fourth Proportional to 385,258.70, 531,658.92 and 215,492.82

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Solution

The fourth proportional to 385,258.70, 531,658.92 and 215,492.82 is: 297,381.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,258.70 : 531,658.92 = 215,492.82 : x
  2. Step 2: Convert to fraction form
    385,258.70/531,658.92 = 215,492.82/x
  3. Step 3: Cross multiply
    385,258.70x = 531,658.92 × 215,492.82
  4. Step 4: Simplify right side
    385,258.70x = 114,568,679,948.95
  5. Step 5: Solve for x
    x = 114,568,679,948.95/385,258.70
  6. Step 6: Final answer
    x = 297,381.17

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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.