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Finding the Fourth Proportional to 245,643.40, 368,465.28 and 68,150.58

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Solution

The fourth proportional to 245,643.40, 368,465.28 and 68,150.58 is: 102,225.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,643.40 : 368,465.28 = 68,150.58 : x
  2. Step 2: Convert to fraction form
    245,643.40/368,465.28 = 68,150.58/x
  3. Step 3: Cross multiply
    245,643.40x = 368,465.28 × 68,150.58
  4. Step 4: Simplify right side
    245,643.40x = 25,111,122,541.86
  5. Step 5: Solve for x
    x = 25,111,122,541.86/245,643.40
  6. Step 6: Final answer
    x = 102,225.92

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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.