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Finding the Fourth Proportional to 547,603.40, 821,328.30 and 173,664.20

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Solution

The fourth proportional to 547,603.40, 821,328.30 and 173,664.20 is: 260,471.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,603.40 : 821,328.30 = 173,664.20 : x
  2. Step 2: Convert to fraction form
    547,603.40/821,328.30 = 173,664.20/x
  3. Step 3: Cross multiply
    547,603.40x = 821,328.30 × 173,664.20
  4. Step 4: Simplify right side
    547,603.40x = 142,635,322,156.86
  5. Step 5: Solve for x
    x = 142,635,322,156.86/547,603.40
  6. Step 6: Final answer
    x = 260,471.94

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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.