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Finding the Fourth Proportional to 397,364.40, 548,482.94 and 270,113.80

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Solution

The fourth proportional to 397,364.40, 548,482.94 and 270,113.80 is: 372,838.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,364.40 : 548,482.94 = 270,113.80 : x
  2. Step 2: Convert to fraction form
    397,364.40/548,482.94 = 270,113.80/x
  3. Step 3: Cross multiply
    397,364.40x = 548,482.94 × 270,113.80
  4. Step 4: Simplify right side
    397,364.40x = 148,152,811,158.57
  5. Step 5: Solve for x
    x = 148,152,811,158.57/397,364.40
  6. Step 6: Final answer
    x = 372,838.66

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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.