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Finding the Fourth Proportional to 236,640, 355,011.84 and 88,896

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Solution

The fourth proportional to 236,640, 355,011.84 and 88,896 is: 133,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,640 : 355,011.84 = 88,896 : x
  2. Step 2: Convert to fraction form
    236,640/355,011.84 = 88,896/x
  3. Step 3: Cross multiply
    236,640x = 355,011.84 × 88,896
  4. Step 4: Simplify right side
    236,640x = 31,559,132,528.64
  5. Step 5: Solve for x
    x = 31,559,132,528.64/236,640
  6. Step 6: Final answer
    x = 133,363.47

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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.