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Finding the Fourth Proportional to 547,512.40, 821,122.80 and 168,432.40

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Solution

The fourth proportional to 547,512.40, 821,122.80 and 168,432.40 is: 252,603.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,512.40 : 821,122.80 = 168,432.40 : x
  2. Step 2: Convert to fraction form
    547,512.40/821,122.80 = 168,432.40/x
  3. Step 3: Cross multiply
    547,512.40x = 821,122.80 × 168,432.40
  4. Step 4: Simplify right side
    547,512.40x = 138,303,683,898.72
  5. Step 5: Solve for x
    x = 138,303,683,898.72/547,512.40
  6. Step 6: Final answer
    x = 252,603.75

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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.