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Finding the Fourth Proportional to 499,855.40, 689,798.38 and 270,412.17

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Solution

The fourth proportional to 499,855.40, 689,798.38 and 270,412.17 is: 373,167.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,855.40 : 689,798.38 = 270,412.17 : x
  2. Step 2: Convert to fraction form
    499,855.40/689,798.38 = 270,412.17/x
  3. Step 3: Cross multiply
    499,855.40x = 689,798.38 × 270,412.17
  4. Step 4: Simplify right side
    499,855.40x = 186,529,877,922.65
  5. Step 5: Solve for x
    x = 186,529,877,922.65/499,855.40
  6. Step 6: Final answer
    x = 373,167.67

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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.