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Finding the Fourth Proportional to 279,383.40, 419,070.06 and 101,888.64

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Solution

The fourth proportional to 279,383.40, 419,070.06 and 101,888.64 is: 152,831.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,383.40 : 419,070.06 = 101,888.64 : x
  2. Step 2: Convert to fraction form
    279,383.40/419,070.06 = 101,888.64/x
  3. Step 3: Cross multiply
    279,383.40x = 419,070.06 × 101,888.64
  4. Step 4: Simplify right side
    279,383.40x = 42,698,478,478.12
  5. Step 5: Solve for x
    x = 42,698,478,478.12/279,383.40
  6. Step 6: Final answer
    x = 152,831.12

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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.