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Finding the Fourth Proportional to 292,317.35, 438,503.90 and 81,954.68

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Solution

The fourth proportional to 292,317.35, 438,503.90 and 81,954.68 is: 122,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,317.35 : 438,503.90 = 81,954.68 : x
  2. Step 2: Convert to fraction form
    292,317.35/438,503.90 = 81,954.68/x
  3. Step 3: Cross multiply
    292,317.35x = 438,503.90 × 81,954.68
  4. Step 4: Simplify right side
    292,317.35x = 35,937,444,200.96
  5. Step 5: Solve for x
    x = 35,937,444,200.96/292,317.35
  6. Step 6: Final answer
    x = 122,939.83

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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.