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Finding the Fourth Proportional to 319,150.78, 440,420.28 and 175,907.68

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Solution

The fourth proportional to 319,150.78, 440,420.28 and 175,907.68 is: 242,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,150.78 : 440,420.28 = 175,907.68 : x
  2. Step 2: Convert to fraction form
    319,150.78/440,420.28 = 175,907.68/x
  3. Step 3: Cross multiply
    319,150.78x = 440,420.28 × 175,907.68
  4. Step 4: Simplify right side
    319,150.78x = 77,473,309,679.75
  5. Step 5: Solve for x
    x = 77,473,309,679.75/319,150.78
  6. Step 6: Final answer
    x = 242,748.30

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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.