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Finding the Fourth Proportional to 254,358.32, 351,018.86 and 139,647.63

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Solution

The fourth proportional to 254,358.32, 351,018.86 and 139,647.63 is: 192,716.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,358.32 : 351,018.86 = 139,647.63 : x
  2. Step 2: Convert to fraction form
    254,358.32/351,018.86 = 139,647.63/x
  3. Step 3: Cross multiply
    254,358.32x = 351,018.86 × 139,647.63
  4. Step 4: Simplify right side
    254,358.32x = 49,018,951,186.06
  5. Step 5: Solve for x
    x = 49,018,951,186.06/254,358.32
  6. Step 6: Final answer
    x = 192,716.13

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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.