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Finding the Fourth Proportional to 442,166.40, 661,838.40 and 348,854.40

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Solution

The fourth proportional to 442,166.40, 661,838.40 and 348,854.40 is: 522,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,166.40 : 661,838.40 = 348,854.40 : x
  2. Step 2: Convert to fraction form
    442,166.40/661,838.40 = 348,854.40/x
  3. Step 3: Cross multiply
    442,166.40x = 661,838.40 × 348,854.40
  4. Step 4: Simplify right side
    442,166.40x = 230,885,237,928.96
  5. Step 5: Solve for x
    x = 230,885,237,928.96/442,166.40
  6. Step 6: Final answer
    x = 522,168.21

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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.