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Finding the Fourth Proportional to 346,301.10, 519,451.65 and 320,640.30

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Solution

The fourth proportional to 346,301.10, 519,451.65 and 320,640.30 is: 480,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,301.10 : 519,451.65 = 320,640.30 : x
  2. Step 2: Convert to fraction form
    346,301.10/519,451.65 = 320,640.30/x
  3. Step 3: Cross multiply
    346,301.10x = 519,451.65 × 320,640.30
  4. Step 4: Simplify right side
    346,301.10x = 166,557,132,891.50
  5. Step 5: Solve for x
    x = 166,557,132,891.50/346,301.10
  6. Step 6: Final answer
    x = 480,960.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.