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Finding the Fourth Proportional to 211,980.86, 292,549.86 and 121,365.25

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Solution

The fourth proportional to 211,980.86, 292,549.86 and 121,365.25 is: 167,493.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,980.86 : 292,549.86 = 121,365.25 : x
  2. Step 2: Convert to fraction form
    211,980.86/292,549.86 = 121,365.25/x
  3. Step 3: Cross multiply
    211,980.86x = 292,549.86 × 121,365.25
  4. Step 4: Simplify right side
    211,980.86x = 35,505,386,164.99
  5. Step 5: Solve for x
    x = 35,505,386,164.99/211,980.86
  6. Step 6: Final answer
    x = 167,493.36

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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.