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Finding the Fourth Proportional to 507,579.71, 761,465.70 and 203,997.47

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Solution

The fourth proportional to 507,579.71, 761,465.70 and 203,997.47 is: 306,034.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,579.71 : 761,465.70 = 203,997.47 : x
  2. Step 2: Convert to fraction form
    507,579.71/761,465.70 = 203,997.47/x
  3. Step 3: Cross multiply
    507,579.71x = 761,465.70 × 203,997.47
  4. Step 4: Simplify right side
    507,579.71x = 155,337,076,291.78
  5. Step 5: Solve for x
    x = 155,337,076,291.78/507,579.71
  6. Step 6: Final answer
    x = 306,034.84

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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.