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Finding the Fourth Proportional to 372,721.80, 514,340.64 and 202,955.52

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Solution

The fourth proportional to 372,721.80, 514,340.64 and 202,955.52 is: 280,070.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,721.80 : 514,340.64 = 202,955.52 : x
  2. Step 2: Convert to fraction form
    372,721.80/514,340.64 = 202,955.52/x
  3. Step 3: Cross multiply
    372,721.80x = 514,340.64 × 202,955.52
  4. Step 4: Simplify right side
    372,721.80x = 104,388,272,048.33
  5. Step 5: Solve for x
    x = 104,388,272,048.33/372,721.80
  6. Step 6: Final answer
    x = 280,070.21

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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.