Home / 397,178.10-548,109.05-215,889.98

Finding the Fourth Proportional to 397,178.10, 548,109.05 and 215,889.98

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Solution

The fourth proportional to 397,178.10, 548,109.05 and 215,889.98 is: 297,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,178.10 : 548,109.05 = 215,889.98 : x
  2. Step 2: Convert to fraction form
    397,178.10/548,109.05 = 215,889.98/x
  3. Step 3: Cross multiply
    397,178.10x = 548,109.05 × 215,889.98
  4. Step 4: Simplify right side
    397,178.10x = 118,331,248,022.32
  5. Step 5: Solve for x
    x = 118,331,248,022.32/397,178.10
  6. Step 6: Final answer
    x = 297,929.94

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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.