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Finding the Fourth Proportional to 256,580.20, 385,259.10 and 197,482.60

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Solution

The fourth proportional to 256,580.20, 385,259.10 and 197,482.60 is: 296,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,580.20 : 385,259.10 = 197,482.60 : x
  2. Step 2: Convert to fraction form
    256,580.20/385,259.10 = 197,482.60/x
  3. Step 3: Cross multiply
    256,580.20x = 385,259.10 × 197,482.60
  4. Step 4: Simplify right side
    256,580.20x = 76,081,968,741.66
  5. Step 5: Solve for x
    x = 76,081,968,741.66/256,580.20
  6. Step 6: Final answer
    x = 296,523.15

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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.