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Finding the Fourth Proportional to 402,277.70, 555,169.48 and 220,989.98

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Solution

The fourth proportional to 402,277.70, 555,169.48 and 220,989.98 is: 304,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,277.70 : 555,169.48 = 220,989.98 : x
  2. Step 2: Convert to fraction form
    402,277.70/555,169.48 = 220,989.98/x
  3. Step 3: Cross multiply
    402,277.70x = 555,169.48 × 220,989.98
  4. Step 4: Simplify right side
    402,277.70x = 122,686,892,281.81
  5. Step 5: Solve for x
    x = 122,686,892,281.81/402,277.70
  6. Step 6: Final answer
    x = 304,980.59

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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.