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Finding the Fourth Proportional to 291,495.36, 436,864.32 and 131,453.76

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Solution

The fourth proportional to 291,495.36, 436,864.32 and 131,453.76 is: 197,009.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,495.36 : 436,864.32 = 131,453.76 : x
  2. Step 2: Convert to fraction form
    291,495.36/436,864.32 = 131,453.76/x
  3. Step 3: Cross multiply
    291,495.36x = 436,864.32 × 131,453.76
  4. Step 4: Simplify right side
    291,495.36x = 57,427,457,473.84
  5. Step 5: Solve for x
    x = 57,427,457,473.84/291,495.36
  6. Step 6: Final answer
    x = 197,009.85

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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.