Home / 429,065.80-643,307.10-162,786.40

Finding the Fourth Proportional to 429,065.80, 643,307.10 and 162,786.40

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Solution

The fourth proportional to 429,065.80, 643,307.10 and 162,786.40 is: 244,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,065.80 : 643,307.10 = 162,786.40 : x
  2. Step 2: Convert to fraction form
    429,065.80/643,307.10 = 162,786.40/x
  3. Step 3: Cross multiply
    429,065.80x = 643,307.10 × 162,786.40
  4. Step 4: Simplify right side
    429,065.80x = 104,721,646,903.44
  5. Step 5: Solve for x
    x = 104,721,646,903.44/429,065.80
  6. Step 6: Final answer
    x = 244,068.97

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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.