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Finding the Fourth Proportional to 245,113.76, 338,244 and 137,688.32

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Solution

The fourth proportional to 245,113.76, 338,244 and 137,688.32 is: 190,002.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,113.76 : 338,244 = 137,688.32 : x
  2. Step 2: Convert to fraction form
    245,113.76/338,244 = 137,688.32/x
  3. Step 3: Cross multiply
    245,113.76x = 338,244 × 137,688.32
  4. Step 4: Simplify right side
    245,113.76x = 46,572,248,110.08
  5. Step 5: Solve for x
    x = 46,572,248,110.08/245,113.76
  6. Step 6: Final answer
    x = 190,002.59

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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.