Home / 429,271.36-643,761.24-148,723.12

Finding the Fourth Proportional to 429,271.36, 643,761.24 and 148,723.12

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Solution

The fourth proportional to 429,271.36, 643,761.24 and 148,723.12 is: 223,034.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,271.36 : 643,761.24 = 148,723.12 : x
  2. Step 2: Convert to fraction form
    429,271.36/643,761.24 = 148,723.12/x
  3. Step 3: Cross multiply
    429,271.36x = 643,761.24 × 148,723.12
  4. Step 4: Simplify right side
    429,271.36x = 95,742,180,147.87
  5. Step 5: Solve for x
    x = 95,742,180,147.87/429,271.36
  6. Step 6: Final answer
    x = 223,034.17

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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.