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Finding the Fourth Proportional to 208,391.88, 287,580.26 and 112,900.92

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Solution

The fourth proportional to 208,391.88, 287,580.26 and 112,900.92 is: 155,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,391.88 : 287,580.26 = 112,900.92 : x
  2. Step 2: Convert to fraction form
    208,391.88/287,580.26 = 112,900.92/x
  3. Step 3: Cross multiply
    208,391.88x = 287,580.26 × 112,900.92
  4. Step 4: Simplify right side
    208,391.88x = 32,468,075,927.84
  5. Step 5: Solve for x
    x = 32,468,075,927.84/208,391.88
  6. Step 6: Final answer
    x = 155,802.98

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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.