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Finding the Fourth Proportional to 346,331.20, 519,496.80 and 320,411.20

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Solution

The fourth proportional to 346,331.20, 519,496.80 and 320,411.20 is: 480,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,331.20 : 519,496.80 = 320,411.20 : x
  2. Step 2: Convert to fraction form
    346,331.20/519,496.80 = 320,411.20/x
  3. Step 3: Cross multiply
    346,331.20x = 519,496.80 × 320,411.20
  4. Step 4: Simplify right side
    346,331.20x = 166,452,593,084.16
  5. Step 5: Solve for x
    x = 166,452,593,084.16/346,331.20
  6. Step 6: Final answer
    x = 480,616.80

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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.