Home / 429,258.32-643,901.04-204,643.28

Finding the Fourth Proportional to 429,258.32, 643,901.04 and 204,643.28

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Solution

The fourth proportional to 429,258.32, 643,901.04 and 204,643.28 is: 306,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,258.32 : 643,901.04 = 204,643.28 : x
  2. Step 2: Convert to fraction form
    429,258.32/643,901.04 = 204,643.28/x
  3. Step 3: Cross multiply
    429,258.32x = 643,901.04 × 204,643.28
  4. Step 4: Simplify right side
    429,258.32x = 131,770,020,821.01
  5. Step 5: Solve for x
    x = 131,770,020,821.01/429,258.32
  6. Step 6: Final answer
    x = 306,971.38

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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.