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Finding the Fourth Proportional to 346,575.62, 518,680.62 and 290,479.06

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Solution

The fourth proportional to 346,575.62, 518,680.62 and 290,479.06 is: 434,727.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,575.62 : 518,680.62 = 290,479.06 : x
  2. Step 2: Convert to fraction form
    346,575.62/518,680.62 = 290,479.06/x
  3. Step 3: Cross multiply
    346,575.62x = 518,680.62 × 290,479.06
  4. Step 4: Simplify right side
    346,575.62x = 150,665,858,937.82
  5. Step 5: Solve for x
    x = 150,665,858,937.82/346,575.62
  6. Step 6: Final answer
    x = 434,727.23

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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.