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Finding the Fourth Proportional to 350,071.60, 525,107.40 and 266,090.80

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Solution

The fourth proportional to 350,071.60, 525,107.40 and 266,090.80 is: 399,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,071.60 : 525,107.40 = 266,090.80 : x
  2. Step 2: Convert to fraction form
    350,071.60/525,107.40 = 266,090.80/x
  3. Step 3: Cross multiply
    350,071.60x = 525,107.40 × 266,090.80
  4. Step 4: Simplify right side
    350,071.60x = 139,726,248,151.92
  5. Step 5: Solve for x
    x = 139,726,248,151.92/350,071.60
  6. Step 6: Final answer
    x = 399,136.20

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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.