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Finding the Fourth Proportional to 218,783.13, 301,920.99 and 118,181.13

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Solution

The fourth proportional to 218,783.13, 301,920.99 and 118,181.13 is: 163,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,783.13 : 301,920.99 = 118,181.13 : x
  2. Step 2: Convert to fraction form
    218,783.13/301,920.99 = 118,181.13/x
  3. Step 3: Cross multiply
    218,783.13x = 301,920.99 × 118,181.13
  4. Step 4: Simplify right side
    218,783.13x = 35,681,361,668.41
  5. Step 5: Solve for x
    x = 35,681,361,668.41/218,783.13
  6. Step 6: Final answer
    x = 163,090.10

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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.