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Finding the Fourth Proportional to 397,859.16, 549,052.64 and 216,576.28

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Solution

The fourth proportional to 397,859.16, 549,052.64 and 216,576.28 is: 298,879.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,859.16 : 549,052.64 = 216,576.28 : x
  2. Step 2: Convert to fraction form
    397,859.16/549,052.64 = 216,576.28/x
  3. Step 3: Cross multiply
    397,859.16x = 549,052.64 × 216,576.28
  4. Step 4: Simplify right side
    397,859.16x = 118,911,778,295.38
  5. Step 5: Solve for x
    x = 118,911,778,295.38/397,859.16
  6. Step 6: Final answer
    x = 298,879.08

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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.