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Finding the Fourth Proportional to 279,131.55, 385,262.78 and 183,647.13

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Solution

The fourth proportional to 279,131.55, 385,262.78 and 183,647.13 is: 253,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,131.55 : 385,262.78 = 183,647.13 : x
  2. Step 2: Convert to fraction form
    279,131.55/385,262.78 = 183,647.13/x
  3. Step 3: Cross multiply
    279,131.55x = 385,262.78 × 183,647.13
  4. Step 4: Simplify right side
    279,131.55x = 70,752,402,924.59
  5. Step 5: Solve for x
    x = 70,752,402,924.59/279,131.55
  6. Step 6: Final answer
    x = 253,473.33

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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.