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Finding the Fourth Proportional to 534,699.28, 738,000.48 and 319,887.28

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Solution

The fourth proportional to 534,699.28, 738,000.48 and 319,887.28 is: 441,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,699.28 : 738,000.48 = 319,887.28 : x
  2. Step 2: Convert to fraction form
    534,699.28/738,000.48 = 319,887.28/x
  3. Step 3: Cross multiply
    534,699.28x = 738,000.48 × 319,887.28
  4. Step 4: Simplify right side
    534,699.28x = 236,076,966,185.89
  5. Step 5: Solve for x
    x = 236,076,966,185.89/534,699.28
  6. Step 6: Final answer
    x = 441,513.53

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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.