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Finding the Fourth Proportional to 385,041.22, 577,350.42 and 118,727.80

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Solution

The fourth proportional to 385,041.22, 577,350.42 and 118,727.80 is: 178,026.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,041.22 : 577,350.42 = 118,727.80 : x
  2. Step 2: Convert to fraction form
    385,041.22/577,350.42 = 118,727.80/x
  3. Step 3: Cross multiply
    385,041.22x = 577,350.42 × 118,727.80
  4. Step 4: Simplify right side
    385,041.22x = 68,547,545,195.68
  5. Step 5: Solve for x
    x = 68,547,545,195.68/385,041.22
  6. Step 6: Final answer
    x = 178,026.51

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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.