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Finding the Fourth Proportional to 272,829.70, 409,244.55 and 139,665.70

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Solution

The fourth proportional to 272,829.70, 409,244.55 and 139,665.70 is: 209,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,829.70 : 409,244.55 = 139,665.70 : x
  2. Step 2: Convert to fraction form
    272,829.70/409,244.55 = 139,665.70/x
  3. Step 3: Cross multiply
    272,829.70x = 409,244.55 × 139,665.70
  4. Step 4: Simplify right side
    272,829.70x = 57,157,426,546.94
  5. Step 5: Solve for x
    x = 57,157,426,546.94/272,829.70
  6. Step 6: Final answer
    x = 209,498.55

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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.