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Finding the Fourth Proportional to 384,064.40, 576,096.60 and 258,093.20

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Solution

The fourth proportional to 384,064.40, 576,096.60 and 258,093.20 is: 387,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,064.40 : 576,096.60 = 258,093.20 : x
  2. Step 2: Convert to fraction form
    384,064.40/576,096.60 = 258,093.20/x
  3. Step 3: Cross multiply
    384,064.40x = 576,096.60 × 258,093.20
  4. Step 4: Simplify right side
    384,064.40x = 148,686,615,003.12
  5. Step 5: Solve for x
    x = 148,686,615,003.12/384,064.40
  6. Step 6: Final answer
    x = 387,139.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.