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Finding the Fourth Proportional to 250,810.16, 346,128 and 137,636.96

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Solution

The fourth proportional to 250,810.16, 346,128 and 137,636.96 is: 189,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,810.16 : 346,128 = 137,636.96 : x
  2. Step 2: Convert to fraction form
    250,810.16/346,128 = 137,636.96/x
  3. Step 3: Cross multiply
    250,810.16x = 346,128 × 137,636.96
  4. Step 4: Simplify right side
    250,810.16x = 47,640,005,690.88
  5. Step 5: Solve for x
    x = 47,640,005,690.88/250,810.16
  6. Step 6: Final answer
    x = 189,944.48

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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.