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Finding the Fourth Proportional to 245,857.48, 368,662.68 and 143,307.76

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Solution

The fourth proportional to 245,857.48, 368,662.68 and 143,307.76 is: 214,889.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,857.48 : 368,662.68 = 143,307.76 : x
  2. Step 2: Convert to fraction form
    245,857.48/368,662.68 = 143,307.76/x
  3. Step 3: Cross multiply
    245,857.48x = 368,662.68 × 143,307.76
  4. Step 4: Simplify right side
    245,857.48x = 52,832,222,866.40
  5. Step 5: Solve for x
    x = 52,832,222,866.40/245,857.48
  6. Step 6: Final answer
    x = 214,889.63

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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.