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Finding the Fourth Proportional to 455,064.64, 628,114.11 and 264,139.54

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Solution

The fourth proportional to 455,064.64, 628,114.11 and 264,139.54 is: 364,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,064.64 : 628,114.11 = 264,139.54 : x
  2. Step 2: Convert to fraction form
    455,064.64/628,114.11 = 264,139.54/x
  3. Step 3: Cross multiply
    455,064.64x = 628,114.11 × 264,139.54
  4. Step 4: Simplify right side
    455,064.64x = 165,909,772,082.91
  5. Step 5: Solve for x
    x = 165,909,772,082.91/455,064.64
  6. Step 6: Final answer
    x = 364,585.07

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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.