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Finding the Fourth Proportional to 350,090.20, 524,940.90 and 139,490.20

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Solution

The fourth proportional to 350,090.20, 524,940.90 and 139,490.20 is: 209,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,090.20 : 524,940.90 = 139,490.20 : x
  2. Step 2: Convert to fraction form
    350,090.20/524,940.90 = 139,490.20/x
  3. Step 3: Cross multiply
    350,090.20x = 524,940.90 × 139,490.20
  4. Step 4: Simplify right side
    350,090.20x = 73,224,111,129.18
  5. Step 5: Solve for x
    x = 73,224,111,129.18/350,090.20
  6. Step 6: Final answer
    x = 209,157.84

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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.