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Finding the Fourth Proportional to 245,376.68, 338,586.90 and 137,925.32

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Solution

The fourth proportional to 245,376.68, 338,586.90 and 137,925.32 is: 190,318.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,376.68 : 338,586.90 = 137,925.32 : x
  2. Step 2: Convert to fraction form
    245,376.68/338,586.90 = 137,925.32/x
  3. Step 3: Cross multiply
    245,376.68x = 338,586.90 × 137,925.32
  4. Step 4: Simplify right side
    245,376.68x = 46,699,706,530.31
  5. Step 5: Solve for x
    x = 46,699,706,530.31/245,376.68
  6. Step 6: Final answer
    x = 190,318.44

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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.