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Finding the Fourth Proportional to 245,156.76, 338,314.32 and 137,724.53

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Solution

The fourth proportional to 245,156.76, 338,314.32 and 137,724.53 is: 190,058.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,156.76 : 338,314.32 = 137,724.53 : x
  2. Step 2: Convert to fraction form
    245,156.76/338,314.32 = 137,724.53/x
  3. Step 3: Cross multiply
    245,156.76x = 338,314.32 × 137,724.53
  4. Step 4: Simplify right side
    245,156.76x = 46,594,180,714.27
  5. Step 5: Solve for x
    x = 46,594,180,714.27/245,156.76
  6. Step 6: Final answer
    x = 190,058.72

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1.5x scale

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.