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Finding the Fourth Proportional to 455,211.17, 628,254.66 and 254,020.13

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Solution

The fourth proportional to 455,211.17, 628,254.66 and 254,020.13 is: 350,583.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,211.17 : 628,254.66 = 254,020.13 : x
  2. Step 2: Convert to fraction form
    455,211.17/628,254.66 = 254,020.13/x
  3. Step 3: Cross multiply
    455,211.17x = 628,254.66 × 254,020.13
  4. Step 4: Simplify right side
    455,211.17x = 159,589,330,406.31
  5. Step 5: Solve for x
    x = 159,589,330,406.31/455,211.17
  6. Step 6: Final answer
    x = 350,583.07

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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.