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Finding the Fourth Proportional to 342,879.89, 514,368.06 and 143,154.85

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Solution

The fourth proportional to 342,879.89, 514,368.06 and 143,154.85 is: 214,752.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,879.89 : 514,368.06 = 143,154.85 : x
  2. Step 2: Convert to fraction form
    342,879.89/514,368.06 = 143,154.85/x
  3. Step 3: Cross multiply
    342,879.89x = 514,368.06 × 143,154.85
  4. Step 4: Simplify right side
    342,879.89x = 73,634,282,474.09
  5. Step 5: Solve for x
    x = 73,634,282,474.09/342,879.89
  6. Step 6: Final answer
    x = 214,752.41

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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.