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Finding the Fourth Proportional to 429,851.40, 643,246.20 and 374,301.60

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Solution

The fourth proportional to 429,851.40, 643,246.20 and 374,301.60 is: 560,119.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,851.40 : 643,246.20 = 374,301.60 : x
  2. Step 2: Convert to fraction form
    429,851.40/643,246.20 = 374,301.60/x
  3. Step 3: Cross multiply
    429,851.40x = 643,246.20 × 374,301.60
  4. Step 4: Simplify right side
    429,851.40x = 240,768,081,853.92
  5. Step 5: Solve for x
    x = 240,768,081,853.92/429,851.40
  6. Step 6: Final answer
    x = 560,119.34

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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.