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Finding the Fourth Proportional to 346,346.70, 478,067.34 and 203,164.62

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Solution

The fourth proportional to 346,346.70, 478,067.34 and 203,164.62 is: 280,431.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,346.70 : 478,067.34 = 203,164.62 : x
  2. Step 2: Convert to fraction form
    346,346.70/478,067.34 = 203,164.62/x
  3. Step 3: Cross multiply
    346,346.70x = 478,067.34 × 203,164.62
  4. Step 4: Simplify right side
    346,346.70x = 97,126,369,465.51
  5. Step 5: Solve for x
    x = 97,126,369,465.51/346,346.70
  6. Step 6: Final answer
    x = 280,431.05

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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.