Home / 257,868.48-386,956.08-139,537.44

Finding the Fourth Proportional to 257,868.48, 386,956.08 and 139,537.44

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Solution

The fourth proportional to 257,868.48, 386,956.08 and 139,537.44 is: 209,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,868.48 : 386,956.08 = 139,537.44 : x
  2. Step 2: Convert to fraction form
    257,868.48/386,956.08 = 139,537.44/x
  3. Step 3: Cross multiply
    257,868.48x = 386,956.08 × 139,537.44
  4. Step 4: Simplify right side
    257,868.48x = 53,994,860,795.64
  5. Step 5: Solve for x
    x = 53,994,860,795.64/257,868.48
  6. Step 6: Final answer
    x = 209,389.15

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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.