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Finding the Fourth Proportional to 501,315.30, 751,979.10 and 185,772.20

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Solution

The fourth proportional to 501,315.30, 751,979.10 and 185,772.20 is: 278,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,315.30 : 751,979.10 = 185,772.20 : x
  2. Step 2: Convert to fraction form
    501,315.30/751,979.10 = 185,772.20/x
  3. Step 3: Cross multiply
    501,315.30x = 751,979.10 × 185,772.20
  4. Step 4: Simplify right side
    501,315.30x = 139,696,808,001.13
  5. Step 5: Solve for x
    x = 139,696,808,001.13/501,315.30
  6. Step 6: Final answer
    x = 278,660.57

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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.