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Finding the Fourth Proportional to 507,961.60, 761,918.10 and 170,969.20

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Solution

The fourth proportional to 507,961.60, 761,918.10 and 170,969.20 is: 256,445.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,961.60 : 761,918.10 = 170,969.20 : x
  2. Step 2: Convert to fraction form
    507,961.60/761,918.10 = 170,969.20/x
  3. Step 3: Cross multiply
    507,961.60x = 761,918.10 × 170,969.20
  4. Step 4: Simplify right side
    507,961.60x = 130,264,528,022.52
  5. Step 5: Solve for x
    x = 130,264,528,022.52/507,961.60
  6. Step 6: Final answer
    x = 256,445.62

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Double scale
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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.