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Finding the Fourth Proportional to 372,967.20, 514,700.64 and 203,201.28

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Solution

The fourth proportional to 372,967.20, 514,700.64 and 203,201.28 is: 280,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,967.20 : 514,700.64 = 203,201.28 : x
  2. Step 2: Convert to fraction form
    372,967.20/514,700.64 = 203,201.28/x
  3. Step 3: Cross multiply
    372,967.20x = 514,700.64 × 203,201.28
  4. Step 4: Simplify right side
    372,967.20x = 104,587,828,864.82
  5. Step 5: Solve for x
    x = 104,587,828,864.82/372,967.20
  6. Step 6: Final answer
    x = 280,420.98

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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.