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Finding the Fourth Proportional to 254,145.29, 350,719.07 and 139,421.00

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Solution

The fourth proportional to 254,145.29, 350,719.07 and 139,421.00 is: 192,400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,145.29 : 350,719.07 = 139,421.00 : x
  2. Step 2: Convert to fraction form
    254,145.29/350,719.07 = 139,421.00/x
  3. Step 3: Cross multiply
    254,145.29x = 350,719.07 × 139,421.00
  4. Step 4: Simplify right side
    254,145.29x = 48,897,601,007.77
  5. Step 5: Solve for x
    x = 48,897,601,007.77/254,145.29
  6. Step 6: Final answer
    x = 192,400.19

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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.