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Finding the Fourth Proportional to 270,108.61, 405,163.22 and 70,428.83

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Solution

The fourth proportional to 270,108.61, 405,163.22 and 70,428.83 is: 105,643.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,108.61 : 405,163.22 = 70,428.83 : x
  2. Step 2: Convert to fraction form
    270,108.61/405,163.22 = 70,428.83/x
  3. Step 3: Cross multiply
    270,108.61x = 405,163.22 × 70,428.83
  4. Step 4: Simplify right side
    270,108.61x = 28,535,169,165.67
  5. Step 5: Solve for x
    x = 28,535,169,165.67/270,108.61
  6. Step 6: Final answer
    x = 105,643.32

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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.