Home / 319,564.02-479,346.03-109,203.78

Finding the Fourth Proportional to 319,564.02, 479,346.03 and 109,203.78

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Solution

The fourth proportional to 319,564.02, 479,346.03 and 109,203.78 is: 163,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,564.02 : 479,346.03 = 109,203.78 : x
  2. Step 2: Convert to fraction form
    319,564.02/479,346.03 = 109,203.78/x
  3. Step 3: Cross multiply
    319,564.02x = 479,346.03 × 109,203.78
  4. Step 4: Simplify right side
    319,564.02x = 52,346,398,403.99
  5. Step 5: Solve for x
    x = 52,346,398,403.99/319,564.02
  6. Step 6: Final answer
    x = 163,805.67

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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.