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Finding the Fourth Proportional to 291,948, 437,863.65 and 81,587.76

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Solution

The fourth proportional to 291,948, 437,863.65 and 81,587.76 is: 122,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,948 : 437,863.65 = 81,587.76 : x
  2. Step 2: Convert to fraction form
    291,948/437,863.65 = 81,587.76/x
  3. Step 3: Cross multiply
    291,948x = 437,863.65 × 81,587.76
  4. Step 4: Simplify right side
    291,948x = 35,724,314,388.92
  5. Step 5: Solve for x
    x = 35,724,314,388.92/291,948
  6. Step 6: Final answer
    x = 122,365.33

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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.