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Finding the Fourth Proportional to 292,101.15, 438,224.64 and 81,737.28

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Solution

The fourth proportional to 292,101.15, 438,224.64 and 81,737.28 is: 122,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,101.15 : 438,224.64 = 81,737.28 : x
  2. Step 2: Convert to fraction form
    292,101.15/438,224.64 = 81,737.28/x
  3. Step 3: Cross multiply
    292,101.15x = 438,224.64 × 81,737.28
  4. Step 4: Simplify right side
    292,101.15x = 35,819,290,102.58
  5. Step 5: Solve for x
    x = 35,819,290,102.58/292,101.15
  6. Step 6: Final answer
    x = 122,626.32

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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.