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Finding the Fourth Proportional to 279,420.60, 419,130.90 and 101,868.60

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Solution

The fourth proportional to 279,420.60, 419,130.90 and 101,868.60 is: 152,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,420.60 : 419,130.90 = 101,868.60 : x
  2. Step 2: Convert to fraction form
    279,420.60/419,130.90 = 101,868.60/x
  3. Step 3: Cross multiply
    279,420.60x = 419,130.90 × 101,868.60
  4. Step 4: Simplify right side
    279,420.60x = 42,696,277,999.74
  5. Step 5: Solve for x
    x = 42,696,277,999.74/279,420.60
  6. Step 6: Final answer
    x = 152,802.90

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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.