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Finding the Fourth Proportional to 455,087.13, 628,020.51 and 253,883.13

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Solution

The fourth proportional to 455,087.13, 628,020.51 and 253,883.13 is: 350,358.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,087.13 : 628,020.51 = 253,883.13 : x
  2. Step 2: Convert to fraction form
    455,087.13/628,020.51 = 253,883.13/x
  3. Step 3: Cross multiply
    455,087.13x = 628,020.51 × 253,883.13
  4. Step 4: Simplify right side
    455,087.13x = 159,443,812,783.00
  5. Step 5: Solve for x
    x = 159,443,812,783.00/455,087.13
  6. Step 6: Final answer
    x = 350,358.87

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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.