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Finding the Fourth Proportional to 402,486.30, 603,729.45 and 192,534.30

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Solution

The fourth proportional to 402,486.30, 603,729.45 and 192,534.30 is: 288,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,486.30 : 603,729.45 = 192,534.30 : x
  2. Step 2: Convert to fraction form
    402,486.30/603,729.45 = 192,534.30/x
  3. Step 3: Cross multiply
    402,486.30x = 603,729.45 × 192,534.30
  4. Step 4: Simplify right side
    402,486.30x = 116,238,627,045.14
  5. Step 5: Solve for x
    x = 116,238,627,045.14/402,486.30
  6. Step 6: Final answer
    x = 288,801.45

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1.5x scale

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.