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Finding the Fourth Proportional to 377,048.90, 520,296.54 and 221,975.57

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Solution

The fourth proportional to 377,048.90, 520,296.54 and 221,975.57 is: 306,308.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,048.90 : 520,296.54 = 221,975.57 : x
  2. Step 2: Convert to fraction form
    377,048.90/520,296.54 = 221,975.57/x
  3. Step 3: Cross multiply
    377,048.90x = 520,296.54 × 221,975.57
  4. Step 4: Simplify right side
    377,048.90x = 115,493,118,434.05
  5. Step 5: Solve for x
    x = 115,493,118,434.05/377,048.90
  6. Step 6: Final answer
    x = 306,308.07

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1.5x scale

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.