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Finding the Fourth Proportional to 279,319.62, 385,429.74 and 164,590.81

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Solution

The fourth proportional to 279,319.62, 385,429.74 and 164,590.81 is: 227,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,319.62 : 385,429.74 = 164,590.81 : x
  2. Step 2: Convert to fraction form
    279,319.62/385,429.74 = 164,590.81/x
  3. Step 3: Cross multiply
    279,319.62x = 385,429.74 × 164,590.81
  4. Step 4: Simplify right side
    279,319.62x = 63,438,193,533.74
  5. Step 5: Solve for x
    x = 63,438,193,533.74/279,319.62
  6. Step 6: Final answer
    x = 227,116.86

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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.