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Finding the Fourth Proportional to 292,280.60, 438,420.90 and 274,784.60

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Solution

The fourth proportional to 292,280.60, 438,420.90 and 274,784.60 is: 412,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,280.60 : 438,420.90 = 274,784.60 : x
  2. Step 2: Convert to fraction form
    292,280.60/438,420.90 = 274,784.60/x
  3. Step 3: Cross multiply
    292,280.60x = 438,420.90 × 274,784.60
  4. Step 4: Simplify right side
    292,280.60x = 120,471,311,638.14
  5. Step 5: Solve for x
    x = 120,471,311,638.14/292,280.60
  6. Step 6: Final answer
    x = 412,176.90

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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.