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Finding the Fourth Proportional to 387,819.62, 535,011.42 and 226,681.46

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Solution

The fourth proportional to 387,819.62, 535,011.42 and 226,681.46 is: 312,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,819.62 : 535,011.42 = 226,681.46 : x
  2. Step 2: Convert to fraction form
    387,819.62/535,011.42 = 226,681.46/x
  3. Step 3: Cross multiply
    387,819.62x = 535,011.42 × 226,681.46
  4. Step 4: Simplify right side
    387,819.62x = 121,277,169,802.27
  5. Step 5: Solve for x
    x = 121,277,169,802.27/387,819.62
  6. Step 6: Final answer
    x = 312,715.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.