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Finding the Fourth Proportional to 346,574.96, 518,679.60 and 290,478.44

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Solution

The fourth proportional to 346,574.96, 518,679.60 and 290,478.44 is: 434,726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,574.96 : 518,679.60 = 290,478.44 : x
  2. Step 2: Convert to fraction form
    346,574.96/518,679.60 = 290,478.44/x
  3. Step 3: Cross multiply
    346,574.96x = 518,679.60 × 290,478.44
  4. Step 4: Simplify right side
    346,574.96x = 150,665,241,067.82
  5. Step 5: Solve for x
    x = 150,665,241,067.82/346,574.96
  6. Step 6: Final answer
    x = 434,726.27

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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.