Home / 429,265.80-643,898.70-148,811.40

Finding the Fourth Proportional to 429,265.80, 643,898.70 and 148,811.40

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Solution

The fourth proportional to 429,265.80, 643,898.70 and 148,811.40 is: 223,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,265.80 : 643,898.70 = 148,811.40 : x
  2. Step 2: Convert to fraction form
    429,265.80/643,898.70 = 148,811.40/x
  3. Step 3: Cross multiply
    429,265.80x = 643,898.70 × 148,811.40
  4. Step 4: Simplify right side
    429,265.80x = 95,819,467,005.18
  5. Step 5: Solve for x
    x = 95,819,467,005.18/429,265.80
  6. Step 6: Final answer
    x = 223,217.10

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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.