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Finding the Fourth Proportional to 291,073.74, 401,534.76 and 170,136

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Solution

The fourth proportional to 291,073.74, 401,534.76 and 170,136 is: 234,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,073.74 : 401,534.76 = 170,136 : x
  2. Step 2: Convert to fraction form
    291,073.74/401,534.76 = 170,136/x
  3. Step 3: Cross multiply
    291,073.74x = 401,534.76 × 170,136
  4. Step 4: Simplify right side
    291,073.74x = 68,315,517,927.36
  5. Step 5: Solve for x
    x = 68,315,517,927.36/291,073.74
  6. Step 6: Final answer
    x = 234,701.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.