Home / 429,217.64-643,826.54-162,978.28

Finding the Fourth Proportional to 429,217.64, 643,826.54 and 162,978.28

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Solution

The fourth proportional to 429,217.64, 643,826.54 and 162,978.28 is: 244,467.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,217.64 : 643,826.54 = 162,978.28 : x
  2. Step 2: Convert to fraction form
    429,217.64/643,826.54 = 162,978.28/x
  3. Step 3: Cross multiply
    429,217.64x = 643,826.54 × 162,978.28
  4. Step 4: Simplify right side
    429,217.64x = 104,929,742,107.55
  5. Step 5: Solve for x
    x = 104,929,742,107.55/429,217.64
  6. Step 6: Final answer
    x = 244,467.45

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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.