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Finding the Fourth Proportional to 291,393.18, 402,173.91 and 278,096.22

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Solution

The fourth proportional to 291,393.18, 402,173.91 and 278,096.22 is: 383,821.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,393.18 : 402,173.91 = 278,096.22 : x
  2. Step 2: Convert to fraction form
    291,393.18/402,173.91 = 278,096.22/x
  3. Step 3: Cross multiply
    291,393.18x = 402,173.91 × 278,096.22
  4. Step 4: Simplify right side
    291,393.18x = 111,843,044,153.62
  5. Step 5: Solve for x
    x = 111,843,044,153.62/291,393.18
  6. Step 6: Final answer
    x = 383,821.76

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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.