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Finding the Fourth Proportional to 501,497.28, 692,066.88 and 275,143.68

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Solution

The fourth proportional to 501,497.28, 692,066.88 and 275,143.68 is: 379,698.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,497.28 : 692,066.88 = 275,143.68 : x
  2. Step 2: Convert to fraction form
    501,497.28/692,066.88 = 275,143.68/x
  3. Step 3: Cross multiply
    501,497.28x = 692,066.88 × 275,143.68
  4. Step 4: Simplify right side
    501,497.28x = 190,417,828,169.32
  5. Step 5: Solve for x
    x = 190,417,828,169.32/501,497.28
  6. Step 6: Final answer
    x = 379,698.63

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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.