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Finding the Fourth Proportional to 208,347.48, 287,519.40 and 112,853.94

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Solution

The fourth proportional to 208,347.48, 287,519.40 and 112,853.94 is: 155,738.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,347.48 : 287,519.40 = 112,853.94 : x
  2. Step 2: Convert to fraction form
    208,347.48/287,519.40 = 112,853.94/x
  3. Step 3: Cross multiply
    208,347.48x = 287,519.40 × 112,853.94
  4. Step 4: Simplify right side
    208,347.48x = 32,447,697,116.44
  5. Step 5: Solve for x
    x = 32,447,697,116.44/208,347.48
  6. Step 6: Final answer
    x = 155,738.37

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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.