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Finding the Fourth Proportional to 385,575.51, 532,100.78 and 211,161.04

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Solution

The fourth proportional to 385,575.51, 532,100.78 and 211,161.04 is: 291,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,575.51 : 532,100.78 = 211,161.04 : x
  2. Step 2: Convert to fraction form
    385,575.51/532,100.78 = 211,161.04/x
  3. Step 3: Cross multiply
    385,575.51x = 532,100.78 × 211,161.04
  4. Step 4: Simplify right side
    385,575.51x = 112,358,953,033.81
  5. Step 5: Solve for x
    x = 112,358,953,033.81/385,575.51
  6. Step 6: Final answer
    x = 291,405.84

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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.