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Finding the Fourth Proportional to 449,058.42, 619,700.46 and 306,068.18

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Solution

The fourth proportional to 449,058.42, 619,700.46 and 306,068.18 is: 422,373.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,058.42 : 619,700.46 = 306,068.18 : x
  2. Step 2: Convert to fraction form
    449,058.42/619,700.46 = 306,068.18/x
  3. Step 3: Cross multiply
    449,058.42x = 619,700.46 × 306,068.18
  4. Step 4: Simplify right side
    449,058.42x = 189,670,588,838.86
  5. Step 5: Solve for x
    x = 189,670,588,838.86/449,058.42
  6. Step 6: Final answer
    x = 422,373.97

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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.