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Finding the Fourth Proportional to 319,482.78, 440,871.39 and 183,420.95

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Solution

The fourth proportional to 319,482.78, 440,871.39 and 183,420.95 is: 253,112.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,482.78 : 440,871.39 = 183,420.95 : x
  2. Step 2: Convert to fraction form
    319,482.78/440,871.39 = 183,420.95/x
  3. Step 3: Cross multiply
    319,482.78x = 440,871.39 × 183,420.95
  4. Step 4: Simplify right side
    319,482.78x = 80,865,046,977.26
  5. Step 5: Solve for x
    x = 80,865,046,977.26/319,482.78
  6. Step 6: Final answer
    x = 253,112.38

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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.