Home / 384,865.05-531,139.77-223,719.60

Finding the Fourth Proportional to 384,865.05, 531,139.77 and 223,719.60

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Solution

The fourth proportional to 384,865.05, 531,139.77 and 223,719.60 is: 308,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,865.05 : 531,139.77 = 223,719.60 : x
  2. Step 2: Convert to fraction form
    384,865.05/531,139.77 = 223,719.60/x
  3. Step 3: Cross multiply
    384,865.05x = 531,139.77 × 223,719.60
  4. Step 4: Simplify right side
    384,865.05x = 118,826,376,888.49
  5. Step 5: Solve for x
    x = 118,826,376,888.49/384,865.05
  6. Step 6: Final answer
    x = 308,748.16

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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.