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Finding the Fourth Proportional to 438,798.54, 657,754.65 and 172,745.76

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Solution

The fourth proportional to 438,798.54, 657,754.65 and 172,745.76 is: 258,944.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,798.54 : 657,754.65 = 172,745.76 : x
  2. Step 2: Convert to fraction form
    438,798.54/657,754.65 = 172,745.76/x
  3. Step 3: Cross multiply
    438,798.54x = 657,754.65 × 172,745.76
  4. Step 4: Simplify right side
    438,798.54x = 113,624,326,907.78
  5. Step 5: Solve for x
    x = 113,624,326,907.78/438,798.54
  6. Step 6: Final answer
    x = 258,944.18

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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.