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Finding the Fourth Proportional to 384,455.66, 530,432.88 and 223,279.64

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Solution

The fourth proportional to 384,455.66, 530,432.88 and 223,279.64 is: 308,058.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,455.66 : 530,432.88 = 223,279.64 : x
  2. Step 2: Convert to fraction form
    384,455.66/530,432.88 = 223,279.64/x
  3. Step 3: Cross multiply
    384,455.66x = 530,432.88 × 223,279.64
  4. Step 4: Simplify right side
    384,455.66x = 118,434,862,490.56
  5. Step 5: Solve for x
    x = 118,434,862,490.56/384,455.66
  6. Step 6: Final answer
    x = 308,058.57

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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.