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Finding the Fourth Proportional to 391,548.02, 540,596.32 and 300,741.62

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Solution

The fourth proportional to 391,548.02, 540,596.32 and 300,741.62 is: 415,223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,548.02 : 540,596.32 = 300,741.62 : x
  2. Step 2: Convert to fraction form
    391,548.02/540,596.32 = 300,741.62/x
  3. Step 3: Cross multiply
    391,548.02x = 540,596.32 × 300,741.62
  4. Step 4: Simplify right side
    391,548.02x = 162,579,813,042.84
  5. Step 5: Solve for x
    x = 162,579,813,042.84/391,548.02
  6. Step 6: Final answer
    x = 415,223.18

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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.