Home / 429,074.97-643,643.23-113,528.13

Finding the Fourth Proportional to 429,074.97, 643,643.23 and 113,528.13

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Solution

The fourth proportional to 429,074.97, 643,643.23 and 113,528.13 is: 170,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,074.97 : 643,643.23 = 113,528.13 : x
  2. Step 2: Convert to fraction form
    429,074.97/643,643.23 = 113,528.13/x
  3. Step 3: Cross multiply
    429,074.97x = 643,643.23 × 113,528.13
  4. Step 4: Simplify right side
    429,074.97x = 73,071,612,289.06
  5. Step 5: Solve for x
    x = 73,071,612,289.06/429,074.97
  6. Step 6: Final answer
    x = 170,300.34

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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.