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Finding the Fourth Proportional to 397,995.53, 549,243.65 and 216,717.39

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Solution

The fourth proportional to 397,995.53, 549,243.65 and 216,717.39 is: 299,075.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,995.53 : 549,243.65 = 216,717.39 : x
  2. Step 2: Convert to fraction form
    397,995.53/549,243.65 = 216,717.39/x
  3. Step 3: Cross multiply
    397,995.53x = 549,243.65 × 216,717.39
  4. Step 4: Simplify right side
    397,995.53x = 119,030,650,843.87
  5. Step 5: Solve for x
    x = 119,030,650,843.87/397,995.53
  6. Step 6: Final answer
    x = 299,075.35

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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.