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Finding the Fourth Proportional to 384,299.64, 530,304.67 and 223,128.68

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Solution

The fourth proportional to 384,299.64, 530,304.67 and 223,128.68 is: 307,900.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,299.64 : 530,304.67 = 223,128.68 : x
  2. Step 2: Convert to fraction form
    384,299.64/530,304.67 = 223,128.68/x
  3. Step 3: Cross multiply
    384,299.64x = 530,304.67 × 223,128.68
  4. Step 4: Simplify right side
    384,299.64x = 118,326,178,642.32
  5. Step 5: Solve for x
    x = 118,326,178,642.32/384,299.64
  6. Step 6: Final answer
    x = 307,900.83

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1.5x scale

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.