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Finding the Fourth Proportional to 250,809.44, 346,117.20 and 137,638.40

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Solution

The fourth proportional to 250,809.44, 346,117.20 and 137,638.40 is: 189,941.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,809.44 : 346,117.20 = 137,638.40 : x
  2. Step 2: Convert to fraction form
    250,809.44/346,117.20 = 137,638.40/x
  3. Step 3: Cross multiply
    250,809.44x = 346,117.20 × 137,638.40
  4. Step 4: Simplify right side
    250,809.44x = 47,639,017,620.48
  5. Step 5: Solve for x
    x = 47,639,017,620.48/250,809.44
  6. Step 6: Final answer
    x = 189,941.09

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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.