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Finding the Fourth Proportional to 235,419.90, 353,129.85 and 216,066.30

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Solution

The fourth proportional to 235,419.90, 353,129.85 and 216,066.30 is: 324,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,419.90 : 353,129.85 = 216,066.30 : x
  2. Step 2: Convert to fraction form
    235,419.90/353,129.85 = 216,066.30/x
  3. Step 3: Cross multiply
    235,419.90x = 353,129.85 × 216,066.30
  4. Step 4: Simplify right side
    235,419.90x = 76,299,460,109.06
  5. Step 5: Solve for x
    x = 76,299,460,109.06/235,419.90
  6. Step 6: Final answer
    x = 324,099.45

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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.