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Finding the Fourth Proportional to 377,999.84, 521,603.88 and 216,868.16

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Solution

The fourth proportional to 377,999.84, 521,603.88 and 216,868.16 is: 299,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,999.84 : 521,603.88 = 216,868.16 : x
  2. Step 2: Convert to fraction form
    377,999.84/521,603.88 = 216,868.16/x
  3. Step 3: Cross multiply
    377,999.84x = 521,603.88 × 216,868.16
  4. Step 4: Simplify right side
    377,999.84x = 113,119,273,704.46
  5. Step 5: Solve for x
    x = 113,119,273,704.46/377,999.84
  6. Step 6: Final answer
    x = 299,257.46

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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.