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Finding the Fourth Proportional to 215,798.10, 297,802.65 and 125,208.01

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Solution

The fourth proportional to 215,798.10, 297,802.65 and 125,208.01 is: 172,787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,798.10 : 297,802.65 = 125,208.01 : x
  2. Step 2: Convert to fraction form
    215,798.10/297,802.65 = 125,208.01/x
  3. Step 3: Cross multiply
    215,798.10x = 297,802.65 × 125,208.01
  4. Step 4: Simplify right side
    215,798.10x = 37,287,276,553.19
  5. Step 5: Solve for x
    x = 37,287,276,553.19/215,798.10
  6. Step 6: Final answer
    x = 172,787.79

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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.