Home / 384,864.05-531,138.39-223,718.60

Finding the Fourth Proportional to 384,864.05, 531,138.39 and 223,718.60

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Solution

The fourth proportional to 384,864.05, 531,138.39 and 223,718.60 is: 308,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,864.05 : 531,138.39 = 223,718.60 : x
  2. Step 2: Convert to fraction form
    384,864.05/531,138.39 = 223,718.60/x
  3. Step 3: Cross multiply
    384,864.05x = 531,138.39 × 223,718.60
  4. Step 4: Simplify right side
    384,864.05x = 118,825,537,017.05
  5. Step 5: Solve for x
    x = 118,825,537,017.05/384,864.05
  6. Step 6: Final answer
    x = 308,746.78

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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.