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Finding the Fourth Proportional to 253,918.16, 350,397 and 139,194.32

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Solution

The fourth proportional to 253,918.16, 350,397 and 139,194.32 is: 192,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,918.16 : 350,397 = 139,194.32 : x
  2. Step 2: Convert to fraction form
    253,918.16/350,397 = 139,194.32/x
  3. Step 3: Cross multiply
    253,918.16x = 350,397 × 139,194.32
  4. Step 4: Simplify right side
    253,918.16x = 48,773,272,145.04
  5. Step 5: Solve for x
    x = 48,773,272,145.04/253,918.16
  6. Step 6: Final answer
    x = 192,082.65

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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.