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Finding the Fourth Proportional to 218,776.12, 301,911.18 and 118,174.12

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Solution

The fourth proportional to 218,776.12, 301,911.18 and 118,174.12 is: 163,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,776.12 : 301,911.18 = 118,174.12 : x
  2. Step 2: Convert to fraction form
    218,776.12/301,911.18 = 118,174.12/x
  3. Step 3: Cross multiply
    218,776.12x = 301,911.18 × 118,174.12
  4. Step 4: Simplify right side
    218,776.12x = 35,678,088,014.66
  5. Step 5: Solve for x
    x = 35,678,088,014.66/218,776.12
  6. Step 6: Final answer
    x = 163,080.36

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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.