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Finding the Fourth Proportional to 385,421.64, 577,933.27 and 169,191.88

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Solution

The fourth proportional to 385,421.64, 577,933.27 and 169,191.88 is: 253,700.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,421.64 : 577,933.27 = 169,191.88 : x
  2. Step 2: Convert to fraction form
    385,421.64/577,933.27 = 169,191.88/x
  3. Step 3: Cross multiply
    385,421.64x = 577,933.27 × 169,191.88
  4. Step 4: Simplify right side
    385,421.64x = 97,781,616,465.85
  5. Step 5: Solve for x
    x = 97,781,616,465.85/385,421.64
  6. Step 6: Final answer
    x = 253,700.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.