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Finding the Fourth Proportional to 385,200.45, 577,800.68 and 100,890.45

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Solution

The fourth proportional to 385,200.45, 577,800.68 and 100,890.45 is: 151,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,200.45 : 577,800.68 = 100,890.45 : x
  2. Step 2: Convert to fraction form
    385,200.45/577,800.68 = 100,890.45/x
  3. Step 3: Cross multiply
    385,200.45x = 577,800.68 × 100,890.45
  4. Step 4: Simplify right side
    385,200.45x = 58,294,570,111.05
  5. Step 5: Solve for x
    x = 58,294,570,111.05/385,200.45
  6. Step 6: Final answer
    x = 151,335.68

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Similar ratio
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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.