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Finding the Fourth Proportional to 439,699.61, 607,164.16 and 276,627.93

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Solution

The fourth proportional to 439,699.61, 607,164.16 and 276,627.93 is: 381,984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,699.61 : 607,164.16 = 276,627.93 : x
  2. Step 2: Convert to fraction form
    439,699.61/607,164.16 = 276,627.93/x
  3. Step 3: Cross multiply
    439,699.61x = 607,164.16 × 276,627.93
  4. Step 4: Simplify right side
    439,699.61x = 167,958,563,619.87
  5. Step 5: Solve for x
    x = 167,958,563,619.87/439,699.61
  6. Step 6: Final answer
    x = 381,984.79

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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.