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Finding the Fourth Proportional to 520,036.40, 779,665.80 and 220,271.60

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Solution

The fourth proportional to 520,036.40, 779,665.80 and 220,271.60 is: 330,242.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,036.40 : 779,665.80 = 220,271.60 : x
  2. Step 2: Convert to fraction form
    520,036.40/779,665.80 = 220,271.60/x
  3. Step 3: Cross multiply
    520,036.40x = 779,665.80 × 220,271.60
  4. Step 4: Simplify right side
    520,036.40x = 171,738,233,231.28
  5. Step 5: Solve for x
    x = 171,738,233,231.28/520,036.40
  6. Step 6: Final answer
    x = 330,242.72

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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.