Home / 399,180.16-549,932.88-278,102.44

Finding the Fourth Proportional to 399,180.16, 549,932.88 and 278,102.44

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Solution

The fourth proportional to 399,180.16, 549,932.88 and 278,102.44 is: 383,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,180.16 : 549,932.88 = 278,102.44 : x
  2. Step 2: Convert to fraction form
    399,180.16/549,932.88 = 278,102.44/x
  3. Step 3: Cross multiply
    399,180.16x = 549,932.88 × 278,102.44
  4. Step 4: Simplify right side
    399,180.16x = 152,937,675,764.23
  5. Step 5: Solve for x
    x = 152,937,675,764.23/399,180.16
  6. Step 6: Final answer
    x = 383,129.45

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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.