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Finding the Fourth Proportional to 279,107.74, 385,159.67 and 158,259.79

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Solution

The fourth proportional to 279,107.74, 385,159.67 and 158,259.79 is: 218,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,107.74 : 385,159.67 = 158,259.79 : x
  2. Step 2: Convert to fraction form
    279,107.74/385,159.67 = 158,259.79/x
  3. Step 3: Cross multiply
    279,107.74x = 385,159.67 × 158,259.79
  4. Step 4: Simplify right side
    279,107.74x = 60,955,289,664.51
  5. Step 5: Solve for x
    x = 60,955,289,664.51/279,107.74
  6. Step 6: Final answer
    x = 218,393.40

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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.