Home / 455,307.10-628,324.85-251,358.16

Finding the Fourth Proportional to 455,307.10, 628,324.85 and 251,358.16

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Solution

The fourth proportional to 455,307.10, 628,324.85 and 251,358.16 is: 346,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,307.10 : 628,324.85 = 251,358.16 : x
  2. Step 2: Convert to fraction form
    455,307.10/628,324.85 = 251,358.16/x
  3. Step 3: Cross multiply
    455,307.10x = 628,324.85 × 251,358.16
  4. Step 4: Simplify right side
    455,307.10x = 157,934,577,000.08
  5. Step 5: Solve for x
    x = 157,934,577,000.08/455,307.10
  6. Step 6: Final answer
    x = 346,874.84

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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.