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Finding the Fourth Proportional to 346,138.40, 519,207.60 and 325,143.20

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Solution

The fourth proportional to 346,138.40, 519,207.60 and 325,143.20 is: 487,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,138.40 : 519,207.60 = 325,143.20 : x
  2. Step 2: Convert to fraction form
    346,138.40/519,207.60 = 325,143.20/x
  3. Step 3: Cross multiply
    346,138.40x = 519,207.60 × 325,143.20
  4. Step 4: Simplify right side
    346,138.40x = 168,816,820,528.32
  5. Step 5: Solve for x
    x = 168,816,820,528.32/346,138.40
  6. Step 6: Final answer
    x = 487,714.80

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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.