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Finding the Fourth Proportional to 261,957.60, 393,109.20 and 95,745.60

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Solution

The fourth proportional to 261,957.60, 393,109.20 and 95,745.60 is: 143,681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,957.60 : 393,109.20 = 95,745.60 : x
  2. Step 2: Convert to fraction form
    261,957.60/393,109.20 = 95,745.60/x
  3. Step 3: Cross multiply
    261,957.60x = 393,109.20 × 95,745.60
  4. Step 4: Simplify right side
    261,957.60x = 37,638,476,219.52
  5. Step 5: Solve for x
    x = 37,638,476,219.52/261,957.60
  6. Step 6: Final answer
    x = 143,681.56

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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.