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Finding the Fourth Proportional to 346,712.60, 520,068.90 and 276,728.60

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Solution

The fourth proportional to 346,712.60, 520,068.90 and 276,728.60 is: 415,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,712.60 : 520,068.90 = 276,728.60 : x
  2. Step 2: Convert to fraction form
    346,712.60/520,068.90 = 276,728.60/x
  3. Step 3: Cross multiply
    346,712.60x = 520,068.90 × 276,728.60
  4. Step 4: Simplify right side
    346,712.60x = 143,917,938,600.54
  5. Step 5: Solve for x
    x = 143,917,938,600.54/346,712.60
  6. Step 6: Final answer
    x = 415,092.90

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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.