Home / 398,337,939.78-549,706,886.44-219,717,822.41

Finding the Fourth Proportional to 398,337,939.78, 549,706,886.44 and 219,717,822.41

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Solution

The fourth proportional to 398,337,939.78, 549,706,886.44 and 219,717,822.41 is: 303,210,887.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,337,939.78 : 549,706,886.44 = 219,717,822.41 : x
  2. Step 2: Convert to fraction form
    398,337,939.78/549,706,886.44 = 219,717,822.41/x
  3. Step 3: Cross multiply
    398,337,939.78x = 549,706,886.44 × 219,717,822.41
  4. Step 4: Simplify right side
    398,337,939.78x = 120,780,400,051,141,520
  5. Step 5: Solve for x
    x = 120,780,400,051,141,520/398,337,939.78
  6. Step 6: Final answer
    x = 303,210,887.01

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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.