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Finding the Fourth Proportional to 272,728.40, 409,092.60 and 249,688.40

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Solution

The fourth proportional to 272,728.40, 409,092.60 and 249,688.40 is: 374,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,728.40 : 409,092.60 = 249,688.40 : x
  2. Step 2: Convert to fraction form
    272,728.40/409,092.60 = 249,688.40/x
  3. Step 3: Cross multiply
    272,728.40x = 409,092.60 × 249,688.40
  4. Step 4: Simplify right side
    272,728.40x = 102,145,676,745.84
  5. Step 5: Solve for x
    x = 102,145,676,745.84/272,728.40
  6. Step 6: Final answer
    x = 374,532.60

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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.