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Finding the Fourth Proportional to 272,390.40, 409,460.40 and 194,047.20

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Solution

The fourth proportional to 272,390.40, 409,460.40 and 194,047.20 is: 291,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,390.40 : 409,460.40 = 194,047.20 : x
  2. Step 2: Convert to fraction form
    272,390.40/409,460.40 = 194,047.20/x
  3. Step 3: Cross multiply
    272,390.40x = 409,460.40 × 194,047.20
  4. Step 4: Simplify right side
    272,390.40x = 79,454,644,130.88
  5. Step 5: Solve for x
    x = 79,454,644,130.88/272,390.40
  6. Step 6: Final answer
    x = 291,694.00

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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.