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Finding the Fourth Proportional to 356,072.80, 534,411.60 and 145,861.60

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Solution

The fourth proportional to 356,072.80, 534,411.60 and 145,861.60 is: 218,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,072.80 : 534,411.60 = 145,861.60 : x
  2. Step 2: Convert to fraction form
    356,072.80/534,411.60 = 145,861.60/x
  3. Step 3: Cross multiply
    356,072.80x = 534,411.60 × 145,861.60
  4. Step 4: Simplify right side
    356,072.80x = 77,950,131,034.56
  5. Step 5: Solve for x
    x = 77,950,131,034.56/356,072.80
  6. Step 6: Final answer
    x = 218,916.28

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1.5x scale

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.