Home / 397,941,530.28-549,136,902.12-219,324,877.32

Finding the Fourth Proportional to 397,941,530.28, 549,136,902.12 and 219,324,877.32

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Solution

The fourth proportional to 397,941,530.28, 549,136,902.12 and 219,324,877.32 is: 302,655,979.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,941,530.28 : 549,136,902.12 = 219,324,877.32 : x
  2. Step 2: Convert to fraction form
    397,941,530.28/549,136,902.12 = 219,324,877.32/x
  3. Step 3: Cross multiply
    397,941,530.28x = 549,136,902.12 × 219,324,877.32
  4. Step 4: Simplify right side
    397,941,530.28x = 120,439,383,689,353,840
  5. Step 5: Solve for x
    x = 120,439,383,689,353,840/397,941,530.28
  6. Step 6: Final answer
    x = 302,655,979.65

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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.