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Finding the Fourth Proportional to 304,953.70, 457,430.55 and 205,420.90

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Solution

The fourth proportional to 304,953.70, 457,430.55 and 205,420.90 is: 308,131.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,953.70 : 457,430.55 = 205,420.90 : x
  2. Step 2: Convert to fraction form
    304,953.70/457,430.55 = 205,420.90/x
  3. Step 3: Cross multiply
    304,953.70x = 457,430.55 × 205,420.90
  4. Step 4: Simplify right side
    304,953.70x = 93,965,795,268.50
  5. Step 5: Solve for x
    x = 93,965,795,268.50/304,953.70
  6. Step 6: Final answer
    x = 308,131.35

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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.