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Finding the Fourth Proportional to 319,228.02, 478,842.03 and 108,867.78

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Solution

The fourth proportional to 319,228.02, 478,842.03 and 108,867.78 is: 163,301.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,228.02 : 478,842.03 = 108,867.78 : x
  2. Step 2: Convert to fraction form
    319,228.02/478,842.03 = 108,867.78/x
  3. Step 3: Cross multiply
    319,228.02x = 478,842.03 × 108,867.78
  4. Step 4: Simplify right side
    319,228.02x = 52,130,468,776.79
  5. Step 5: Solve for x
    x = 52,130,468,776.79/319,228.02
  6. Step 6: Final answer
    x = 163,301.67

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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.