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Finding the Fourth Proportional to 487,981.44, 732,009.60 and 168,001.92

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Solution

The fourth proportional to 487,981.44, 732,009.60 and 168,001.92 is: 252,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,981.44 : 732,009.60 = 168,001.92 : x
  2. Step 2: Convert to fraction form
    487,981.44/732,009.60 = 168,001.92/x
  3. Step 3: Cross multiply
    487,981.44x = 732,009.60 × 168,001.92
  4. Step 4: Simplify right side
    487,981.44x = 122,979,018,258.43
  5. Step 5: Solve for x
    x = 122,979,018,258.43/487,981.44
  6. Step 6: Final answer
    x = 252,015.77

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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.