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Finding the Fourth Proportional to 385,327.20, 577,990.80 and 164,143.20

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Solution

The fourth proportional to 385,327.20, 577,990.80 and 164,143.20 is: 246,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,327.20 : 577,990.80 = 164,143.20 : x
  2. Step 2: Convert to fraction form
    385,327.20/577,990.80 = 164,143.20/x
  3. Step 3: Cross multiply
    385,327.20x = 577,990.80 × 164,143.20
  4. Step 4: Simplify right side
    385,327.20x = 94,873,259,482.56
  5. Step 5: Solve for x
    x = 94,873,259,482.56/385,327.20
  6. Step 6: Final answer
    x = 246,214.80

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1.5x scale

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.