Home / 429,147.72-643,466.13-144,768.31

Finding the Fourth Proportional to 429,147.72, 643,466.13 and 144,768.31

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Solution

The fourth proportional to 429,147.72, 643,466.13 and 144,768.31 is: 217,066.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,147.72 : 643,466.13 = 144,768.31 : x
  2. Step 2: Convert to fraction form
    429,147.72/643,466.13 = 144,768.31/x
  3. Step 3: Cross multiply
    429,147.72x = 643,466.13 × 144,768.31
  4. Step 4: Simplify right side
    429,147.72x = 93,153,505,650.29
  5. Step 5: Solve for x
    x = 93,153,505,650.29/429,147.72
  6. Step 6: Final answer
    x = 217,066.30

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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.