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Finding the Fourth Proportional to 208,476.51, 287,697.60 and 112,983.18

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Solution

The fourth proportional to 208,476.51, 287,697.60 and 112,983.18 is: 155,916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,476.51 : 287,697.60 = 112,983.18 : x
  2. Step 2: Convert to fraction form
    208,476.51/287,697.60 = 112,983.18/x
  3. Step 3: Cross multiply
    208,476.51x = 287,697.60 × 112,983.18
  4. Step 4: Simplify right side
    208,476.51x = 32,504,989,726.37
  5. Step 5: Solve for x
    x = 32,504,989,726.37/208,476.51
  6. Step 6: Final answer
    x = 155,916.80

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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.