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Finding the Fourth Proportional to 286,603.70, 429,905.55 and 235,865.30

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Solution

The fourth proportional to 286,603.70, 429,905.55 and 235,865.30 is: 353,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,603.70 : 429,905.55 = 235,865.30 : x
  2. Step 2: Convert to fraction form
    286,603.70/429,905.55 = 235,865.30/x
  3. Step 3: Cross multiply
    286,603.70x = 429,905.55 × 235,865.30
  4. Step 4: Simplify right side
    286,603.70x = 101,399,801,522.42
  5. Step 5: Solve for x
    x = 101,399,801,522.42/286,603.70
  6. Step 6: Final answer
    x = 353,797.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.