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Finding the Fourth Proportional to 245,896.20, 368,811.99 and 77,417.40

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Solution

The fourth proportional to 245,896.20, 368,811.99 and 77,417.40 is: 116,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,896.20 : 368,811.99 = 77,417.40 : x
  2. Step 2: Convert to fraction form
    245,896.20/368,811.99 = 77,417.40/x
  3. Step 3: Cross multiply
    245,896.20x = 368,811.99 × 77,417.40
  4. Step 4: Simplify right side
    245,896.20x = 28,552,465,354.63
  5. Step 5: Solve for x
    x = 28,552,465,354.63/245,896.20
  6. Step 6: Final answer
    x = 116,115.93

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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.