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Finding the Fourth Proportional to 245,775.96, 368,663.60 and 77,311.08

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Solution

The fourth proportional to 245,775.96, 368,663.60 and 77,311.08 is: 115,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,775.96 : 368,663.60 = 77,311.08 : x
  2. Step 2: Convert to fraction form
    245,775.96/368,663.60 = 77,311.08/x
  3. Step 3: Cross multiply
    245,775.96x = 368,663.60 × 77,311.08
  4. Step 4: Simplify right side
    245,775.96x = 28,501,781,072.69
  5. Step 5: Solve for x
    x = 28,501,781,072.69/245,775.96
  6. Step 6: Final answer
    x = 115,966.51

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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.