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Finding the Fourth Proportional to 245,175, 338,345.94 and 136,289.52

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Solution

The fourth proportional to 245,175, 338,345.94 and 136,289.52 is: 188,082.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,175 : 338,345.94 = 136,289.52 : x
  2. Step 2: Convert to fraction form
    245,175/338,345.94 = 136,289.52/x
  3. Step 3: Cross multiply
    245,175x = 338,345.94 × 136,289.52
  4. Step 4: Simplify right side
    245,175x = 46,113,005,756.55
  5. Step 5: Solve for x
    x = 46,113,005,756.55/245,175
  6. Step 6: Final answer
    x = 188,082.01

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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.