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Finding the Fourth Proportional to 473,438.40, 709,552.80 and 192,638.40

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Solution

The fourth proportional to 473,438.40, 709,552.80 and 192,638.40 is: 288,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,438.40 : 709,552.80 = 192,638.40 : x
  2. Step 2: Convert to fraction form
    473,438.40/709,552.80 = 192,638.40/x
  3. Step 3: Cross multiply
    473,438.40x = 709,552.80 × 192,638.40
  4. Step 4: Simplify right side
    473,438.40x = 136,687,116,107.52
  5. Step 5: Solve for x
    x = 136,687,116,107.52/473,438.40
  6. Step 6: Final answer
    x = 288,711.51

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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.