Home / 426,849.12-640,370.88-146,349.36

Finding the Fourth Proportional to 426,849.12, 640,370.88 and 146,349.36

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Solution

The fourth proportional to 426,849.12, 640,370.88 and 146,349.36 is: 219,557.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,849.12 : 640,370.88 = 146,349.36 : x
  2. Step 2: Convert to fraction form
    426,849.12/640,370.88 = 146,349.36/x
  3. Step 3: Cross multiply
    426,849.12x = 640,370.88 × 146,349.36
  4. Step 4: Simplify right side
    426,849.12x = 93,717,868,450.64
  5. Step 5: Solve for x
    x = 93,717,868,450.64/426,849.12
  6. Step 6: Final answer
    x = 219,557.37

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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.