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Finding the Fourth Proportional to 389,364.25, 537,322.67 and 210,516.25

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Solution

The fourth proportional to 389,364.25, 537,322.67 and 210,516.25 is: 290,512.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,364.25 : 537,322.67 = 210,516.25 : x
  2. Step 2: Convert to fraction form
    389,364.25/537,322.67 = 210,516.25/x
  3. Step 3: Cross multiply
    389,364.25x = 537,322.67 × 210,516.25
  4. Step 4: Simplify right side
    389,364.25x = 113,115,153,528.39
  5. Step 5: Solve for x
    x = 113,115,153,528.39/389,364.25
  6. Step 6: Final answer
    x = 290,512.43

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1.5x scale

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.