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Finding the Fourth Proportional to 236,438.40, 354,369.60 and 103,036.80

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Solution

The fourth proportional to 236,438.40, 354,369.60 and 103,036.80 is: 154,429.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,438.40 : 354,369.60 = 103,036.80 : x
  2. Step 2: Convert to fraction form
    236,438.40/354,369.60 = 103,036.80/x
  3. Step 3: Cross multiply
    236,438.40x = 354,369.60 × 103,036.80
  4. Step 4: Simplify right side
    236,438.40x = 36,513,109,601.28
  5. Step 5: Solve for x
    x = 36,513,109,601.28/236,438.40
  6. Step 6: Final answer
    x = 154,429.69

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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.