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Finding the Fourth Proportional to 479,235.69, 718,143.57 and 194,580.09

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Solution

The fourth proportional to 479,235.69, 718,143.57 and 194,580.09 is: 291,581.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,235.69 : 718,143.57 = 194,580.09 : x
  2. Step 2: Convert to fraction form
    479,235.69/718,143.57 = 194,580.09/x
  3. Step 3: Cross multiply
    479,235.69x = 718,143.57 × 194,580.09
  4. Step 4: Simplify right side
    479,235.69x = 139,736,440,483.52
  5. Step 5: Solve for x
    x = 139,736,440,483.52/479,235.69
  6. Step 6: Final answer
    x = 291,581.87

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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.