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Finding the Fourth Proportional to 501,928, 752,870.40 and 127,939.84

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Solution

The fourth proportional to 501,928, 752,870.40 and 127,939.84 is: 191,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,928 : 752,870.40 = 127,939.84 : x
  2. Step 2: Convert to fraction form
    501,928/752,870.40 = 127,939.84/x
  3. Step 3: Cross multiply
    501,928x = 752,870.40 × 127,939.84
  4. Step 4: Simplify right side
    501,928x = 96,322,118,516.74
  5. Step 5: Solve for x
    x = 96,322,118,516.74/501,928
  6. Step 6: Final answer
    x = 191,904.25

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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.