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Finding the Fourth Proportional to 472,648.80, 707,455.80 and 247,688.40

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Solution

The fourth proportional to 472,648.80, 707,455.80 and 247,688.40 is: 370,737.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,648.80 : 707,455.80 = 247,688.40 : x
  2. Step 2: Convert to fraction form
    472,648.80/707,455.80 = 247,688.40/x
  3. Step 3: Cross multiply
    472,648.80x = 707,455.80 × 247,688.40
  4. Step 4: Simplify right side
    472,648.80x = 175,228,595,172.72
  5. Step 5: Solve for x
    x = 175,228,595,172.72/472,648.80
  6. Step 6: Final answer
    x = 370,737.42

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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.