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Finding the Fourth Proportional to 385,221.60, 577,821.60 and 174,859.20

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Solution

The fourth proportional to 385,221.60, 577,821.60 and 174,859.20 is: 262,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,221.60 : 577,821.60 = 174,859.20 : x
  2. Step 2: Convert to fraction form
    385,221.60/577,821.60 = 174,859.20/x
  3. Step 3: Cross multiply
    385,221.60x = 577,821.60 × 174,859.20
  4. Step 4: Simplify right side
    385,221.60x = 101,037,422,718.72
  5. Step 5: Solve for x
    x = 101,037,422,718.72/385,221.60
  6. Step 6: Final answer
    x = 262,283.90

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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.