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Finding the Fourth Proportional to 152,381.80, 228,572.70 and 145,469.80

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Solution

The fourth proportional to 152,381.80, 228,572.70 and 145,469.80 is: 218,204.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,381.80 : 228,572.70 = 145,469.80 : x
  2. Step 2: Convert to fraction form
    152,381.80/228,572.70 = 145,469.80/x
  3. Step 3: Cross multiply
    152,381.80x = 228,572.70 × 145,469.80
  4. Step 4: Simplify right side
    152,381.80x = 33,250,424,954.46
  5. Step 5: Solve for x
    x = 33,250,424,954.46/152,381.80
  6. Step 6: Final answer
    x = 218,204.70

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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.