Home / 398,468,306.88-550,062,588.44-257,408,306.34

Finding the Fourth Proportional to 398,468,306.88, 550,062,588.44 and 257,408,306.34

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Solution

The fourth proportional to 398,468,306.88, 550,062,588.44 and 257,408,306.34 is: 355,337,367.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,468,306.88 : 550,062,588.44 = 257,408,306.34 : x
  2. Step 2: Convert to fraction form
    398,468,306.88/550,062,588.44 = 257,408,306.34/x
  3. Step 3: Cross multiply
    398,468,306.88x = 550,062,588.44 × 257,408,306.34
  4. Step 4: Simplify right side
    398,468,306.88x = 141,590,679,271,565,280
  5. Step 5: Solve for x
    x = 141,590,679,271,565,280/398,468,306.88
  6. Step 6: Final answer
    x = 355,337,367.68

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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.