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Finding the Fourth Proportional to 385,330.60, 577,995.90 and 207,746.20

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Solution

The fourth proportional to 385,330.60, 577,995.90 and 207,746.20 is: 311,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,330.60 : 577,995.90 = 207,746.20 : x
  2. Step 2: Convert to fraction form
    385,330.60/577,995.90 = 207,746.20/x
  3. Step 3: Cross multiply
    385,330.60x = 577,995.90 × 207,746.20
  4. Step 4: Simplify right side
    385,330.60x = 120,076,451,840.58
  5. Step 5: Solve for x
    x = 120,076,451,840.58/385,330.60
  6. Step 6: Final answer
    x = 311,619.30

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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.