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Finding the Fourth Proportional to 384,259.79, 530,276.46 and 223,154.43

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Solution

The fourth proportional to 384,259.79, 530,276.46 and 223,154.43 is: 307,951.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,259.79 : 530,276.46 = 223,154.43 : x
  2. Step 2: Convert to fraction form
    384,259.79/530,276.46 = 223,154.43/x
  3. Step 3: Cross multiply
    384,259.79x = 530,276.46 × 223,154.43
  4. Step 4: Simplify right side
    384,259.79x = 118,333,541,173.72
  5. Step 5: Solve for x
    x = 118,333,541,173.72/384,259.79
  6. Step 6: Final answer
    x = 307,951.93

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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.