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Finding the Fourth Proportional to 319,002.78, 440,243.42 and 175,762.79

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Solution

The fourth proportional to 319,002.78, 440,243.42 and 175,762.79 is: 242,563.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,002.78 : 440,243.42 = 175,762.79 : x
  2. Step 2: Convert to fraction form
    319,002.78/440,243.42 = 175,762.79/x
  3. Step 3: Cross multiply
    319,002.78x = 440,243.42 × 175,762.79
  4. Step 4: Simplify right side
    319,002.78x = 77,378,409,577.12
  5. Step 5: Solve for x
    x = 77,378,409,577.12/319,002.78
  6. Step 6: Final answer
    x = 242,563.43

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1.5x scale

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.