Home / 347,581.21-521,455.05-145,064.71

Finding the Fourth Proportional to 347,581.21, 521,455.05 and 145,064.71

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Solution

The fourth proportional to 347,581.21, 521,455.05 and 145,064.71 is: 217,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,581.21 : 521,455.05 = 145,064.71 : x
  2. Step 2: Convert to fraction form
    347,581.21/521,455.05 = 145,064.71/x
  3. Step 3: Cross multiply
    347,581.21x = 521,455.05 × 145,064.71
  4. Step 4: Simplify right side
    347,581.21x = 75,644,725,606.29
  5. Step 5: Solve for x
    x = 75,644,725,606.29/347,581.21
  6. Step 6: Final answer
    x = 217,631.80

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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.