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Finding the Fourth Proportional to 402,499.79, 603,858.57 and 136,260.32

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Solution

The fourth proportional to 402,499.79, 603,858.57 and 136,260.32 is: 204,427.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,499.79 : 603,858.57 = 136,260.32 : x
  2. Step 2: Convert to fraction form
    402,499.79/603,858.57 = 136,260.32/x
  3. Step 3: Cross multiply
    402,499.79x = 603,858.57 × 136,260.32
  4. Step 4: Simplify right side
    402,499.79x = 82,281,962,981.61
  5. Step 5: Solve for x
    x = 82,281,962,981.61/402,499.79
  6. Step 6: Final answer
    x = 204,427.35

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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.