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Finding the Fourth Proportional to 520,222.40, 779,426.40 and 239,163.20

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Solution

The fourth proportional to 520,222.40, 779,426.40 and 239,163.20 is: 358,327.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,222.40 : 779,426.40 = 239,163.20 : x
  2. Step 2: Convert to fraction form
    520,222.40/779,426.40 = 239,163.20/x
  3. Step 3: Cross multiply
    520,222.40x = 779,426.40 × 239,163.20
  4. Step 4: Simplify right side
    520,222.40x = 186,410,111,988.48
  5. Step 5: Solve for x
    x = 186,410,111,988.48/520,222.40
  6. Step 6: Final answer
    x = 358,327.73

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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.