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Finding the Fourth Proportional to 377,442.70, 520,885.28 and 216,328.84

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Solution

The fourth proportional to 377,442.70, 520,885.28 and 216,328.84 is: 298,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,442.70 : 520,885.28 = 216,328.84 : x
  2. Step 2: Convert to fraction form
    377,442.70/520,885.28 = 216,328.84/x
  3. Step 3: Cross multiply
    377,442.70x = 520,885.28 × 216,328.84
  4. Step 4: Simplify right side
    377,442.70x = 112,682,508,395.48
  5. Step 5: Solve for x
    x = 112,682,508,395.48/377,442.70
  6. Step 6: Final answer
    x = 298,542.03

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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.