Home / 399,217.20-549,521.35-348,139.81

Finding the Fourth Proportional to 399,217.20, 549,521.35 and 348,139.81

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Solution

The fourth proportional to 399,217.20, 549,521.35 and 348,139.81 is: 479,213.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,217.20 : 549,521.35 = 348,139.81 : x
  2. Step 2: Convert to fraction form
    399,217.20/549,521.35 = 348,139.81/x
  3. Step 3: Cross multiply
    399,217.20x = 549,521.35 × 348,139.81
  4. Step 4: Simplify right side
    399,217.20x = 191,310,258,379.94
  5. Step 5: Solve for x
    x = 191,310,258,379.94/399,217.20
  6. Step 6: Final answer
    x = 479,213.47

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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.