Home / 347,143.23-521,010.72-136,928.79

Finding the Fourth Proportional to 347,143.23, 521,010.72 and 136,928.79

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Solution

The fourth proportional to 347,143.23, 521,010.72 and 136,928.79 is: 205,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,143.23 : 521,010.72 = 136,928.79 : x
  2. Step 2: Convert to fraction form
    347,143.23/521,010.72 = 136,928.79/x
  3. Step 3: Cross multiply
    347,143.23x = 521,010.72 × 136,928.79
  4. Step 4: Simplify right side
    347,143.23x = 71,341,367,466.63
  5. Step 5: Solve for x
    x = 71,341,367,466.63/347,143.23
  6. Step 6: Final answer
    x = 205,509.89

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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.