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Finding the Fourth Proportional to 250,916.78, 346,266.42 and 143,491.34

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Solution

The fourth proportional to 250,916.78, 346,266.42 and 143,491.34 is: 198,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,916.78 : 346,266.42 = 143,491.34 : x
  2. Step 2: Convert to fraction form
    250,916.78/346,266.42 = 143,491.34/x
  3. Step 3: Cross multiply
    250,916.78x = 346,266.42 × 143,491.34
  4. Step 4: Simplify right side
    250,916.78x = 49,686,232,602.80
  5. Step 5: Solve for x
    x = 49,686,232,602.80/250,916.78
  6. Step 6: Final answer
    x = 198,018.77

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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.