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Finding the Fourth Proportional to 279,720.41, 386,014.21 and 152,396.01

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Solution

The fourth proportional to 279,720.41, 386,014.21 and 152,396.01 is: 210,306.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,720.41 : 386,014.21 = 152,396.01 : x
  2. Step 2: Convert to fraction form
    279,720.41/386,014.21 = 152,396.01/x
  3. Step 3: Cross multiply
    279,720.41x = 386,014.21 × 152,396.01
  4. Step 4: Simplify right side
    279,720.41x = 58,827,023,477.23
  5. Step 5: Solve for x
    x = 58,827,023,477.23/279,720.41
  6. Step 6: Final answer
    x = 210,306.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.