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Finding the Fourth Proportional to 219,008.40, 329,203.80 and 202,419.60

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Solution

The fourth proportional to 219,008.40, 329,203.80 and 202,419.60 is: 304,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,008.40 : 329,203.80 = 202,419.60 : x
  2. Step 2: Convert to fraction form
    219,008.40/329,203.80 = 202,419.60/x
  3. Step 3: Cross multiply
    219,008.40x = 329,203.80 × 202,419.60
  4. Step 4: Simplify right side
    219,008.40x = 66,637,301,514.48
  5. Step 5: Solve for x
    x = 66,637,301,514.48/219,008.40
  6. Step 6: Final answer
    x = 304,268.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.