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Finding the Fourth Proportional to 228,302.47, 315,035.95 and 154,564.90

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Solution

The fourth proportional to 228,302.47, 315,035.95 and 154,564.90 is: 213,285.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,302.47 : 315,035.95 = 154,564.90 : x
  2. Step 2: Convert to fraction form
    228,302.47/315,035.95 = 154,564.90/x
  3. Step 3: Cross multiply
    228,302.47x = 315,035.95 × 154,564.90
  4. Step 4: Simplify right side
    228,302.47x = 48,693,500,108.16
  5. Step 5: Solve for x
    x = 48,693,500,108.16/228,302.47
  6. Step 6: Final answer
    x = 213,285.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.