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Finding the Fourth Proportional to 395,528.10, 545,826.10 and 223,501.76

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Solution

The fourth proportional to 395,528.10, 545,826.10 and 223,501.76 is: 308,430.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,528.10 : 545,826.10 = 223,501.76 : x
  2. Step 2: Convert to fraction form
    395,528.10/545,826.10 = 223,501.76/x
  3. Step 3: Cross multiply
    395,528.10x = 545,826.10 × 223,501.76
  4. Step 4: Simplify right side
    395,528.10x = 121,993,094,003.94
  5. Step 5: Solve for x
    x = 121,993,094,003.94/395,528.10
  6. Step 6: Final answer
    x = 308,430.92

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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.