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Finding the Fourth Proportional to 212,655.54, 293,463.77 and 115,859.13

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Solution

The fourth proportional to 212,655.54, 293,463.77 and 115,859.13 is: 159,885.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,655.54 : 293,463.77 = 115,859.13 : x
  2. Step 2: Convert to fraction form
    212,655.54/293,463.77 = 115,859.13/x
  3. Step 3: Cross multiply
    212,655.54x = 293,463.77 × 115,859.13
  4. Step 4: Simplify right side
    212,655.54x = 34,000,456,499.42
  5. Step 5: Solve for x
    x = 34,000,456,499.42/212,655.54
  6. Step 6: Final answer
    x = 159,885.12

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1.5x scale

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.