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Finding the Fourth Proportional to 279,319.68, 385,393.95 and 164,603.01

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Solution

The fourth proportional to 279,319.68, 385,393.95 and 164,603.01 is: 227,112.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,319.68 : 385,393.95 = 164,603.01 : x
  2. Step 2: Convert to fraction form
    279,319.68/385,393.95 = 164,603.01/x
  3. Step 3: Cross multiply
    279,319.68x = 385,393.95 × 164,603.01
  4. Step 4: Simplify right side
    279,319.68x = 63,437,004,205.79
  5. Step 5: Solve for x
    x = 63,437,004,205.79/279,319.68
  6. Step 6: Final answer
    x = 227,112.55

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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.