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Finding the Fourth Proportional to 319,071.50, 440,321.56 and 175,836.68

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Solution

The fourth proportional to 319,071.50, 440,321.56 and 175,836.68 is: 242,656.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,071.50 : 440,321.56 = 175,836.68 : x
  2. Step 2: Convert to fraction form
    319,071.50/440,321.56 = 175,836.68/x
  3. Step 3: Cross multiply
    319,071.50x = 440,321.56 × 175,836.68
  4. Step 4: Simplify right side
    319,071.50x = 77,424,681,242.82
  5. Step 5: Solve for x
    x = 77,424,681,242.82/319,071.50
  6. Step 6: Final answer
    x = 242,656.21

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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.