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Finding the Fourth Proportional to 455,210.79, 628,097.10 and 261,581.10

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Solution

The fourth proportional to 455,210.79, 628,097.10 and 261,581.10 is: 360,928.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,210.79 : 628,097.10 = 261,581.10 : x
  2. Step 2: Convert to fraction form
    455,210.79/628,097.10 = 261,581.10/x
  3. Step 3: Cross multiply
    455,210.79x = 628,097.10 × 261,581.10
  4. Step 4: Simplify right side
    455,210.79x = 164,298,330,324.81
  5. Step 5: Solve for x
    x = 164,298,330,324.81/455,210.79
  6. Step 6: Final answer
    x = 360,928.02

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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.