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Finding the Fourth Proportional to 288,016.35, 397,484.91 and 158,980.11

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Solution

The fourth proportional to 288,016.35, 397,484.91 and 158,980.11 is: 219,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,016.35 : 397,484.91 = 158,980.11 : x
  2. Step 2: Convert to fraction form
    288,016.35/397,484.91 = 158,980.11/x
  3. Step 3: Cross multiply
    288,016.35x = 397,484.91 × 158,980.11
  4. Step 4: Simplify right side
    288,016.35x = 63,192,194,715.14
  5. Step 5: Solve for x
    x = 63,192,194,715.14/288,016.35
  6. Step 6: Final answer
    x = 219,404.89

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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.