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Finding the Fourth Proportional to 208,310.93, 287,389.82 and 153,993.51

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Solution

The fourth proportional to 208,310.93, 287,389.82 and 153,993.51 is: 212,452.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,310.93 : 287,389.82 = 153,993.51 : x
  2. Step 2: Convert to fraction form
    208,310.93/287,389.82 = 153,993.51/x
  3. Step 3: Cross multiply
    208,310.93x = 287,389.82 × 153,993.51
  4. Step 4: Simplify right side
    208,310.93x = 44,256,167,120.07
  5. Step 5: Solve for x
    x = 44,256,167,120.07/208,310.93
  6. Step 6: Final answer
    x = 212,452.45

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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.