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Finding the Fourth Proportional to 292,285.40, 438,428.10 and 266,480.60

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Solution

The fourth proportional to 292,285.40, 438,428.10 and 266,480.60 is: 399,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,285.40 : 438,428.10 = 266,480.60 : x
  2. Step 2: Convert to fraction form
    292,285.40/438,428.10 = 266,480.60/x
  3. Step 3: Cross multiply
    292,285.40x = 438,428.10 × 266,480.60
  4. Step 4: Simplify right side
    292,285.40x = 116,832,583,144.86
  5. Step 5: Solve for x
    x = 116,832,583,144.86/292,285.40
  6. Step 6: Final answer
    x = 399,720.90

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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.