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Finding the Fourth Proportional to 507,387.33, 761,116.46 and 203,781.51

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Solution

The fourth proportional to 507,387.33, 761,116.46 and 203,781.51 is: 305,686.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,387.33 : 761,116.46 = 203,781.51 : x
  2. Step 2: Convert to fraction form
    507,387.33/761,116.46 = 203,781.51/x
  3. Step 3: Cross multiply
    507,387.33x = 761,116.46 × 203,781.51
  4. Step 4: Simplify right side
    507,387.33x = 155,101,460,485.75
  5. Step 5: Solve for x
    x = 155,101,460,485.75/507,387.33
  6. Step 6: Final answer
    x = 305,686.51

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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.