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Finding the Fourth Proportional to 272,915.10, 409,372.65 and 255,200.40

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Solution

The fourth proportional to 272,915.10, 409,372.65 and 255,200.40 is: 382,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,915.10 : 409,372.65 = 255,200.40 : x
  2. Step 2: Convert to fraction form
    272,915.10/409,372.65 = 255,200.40/x
  3. Step 3: Cross multiply
    272,915.10x = 409,372.65 × 255,200.40
  4. Step 4: Simplify right side
    272,915.10x = 104,472,064,029.06
  5. Step 5: Solve for x
    x = 104,472,064,029.06/272,915.10
  6. Step 6: Final answer
    x = 382,800.60

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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.