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Finding the Fourth Proportional to 208,326.94, 287,411.88 and 154,009.54

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Solution

The fourth proportional to 208,326.94, 287,411.88 and 154,009.54 is: 212,474.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,326.94 : 287,411.88 = 154,009.54 : x
  2. Step 2: Convert to fraction form
    208,326.94/287,411.88 = 154,009.54/x
  3. Step 3: Cross multiply
    208,326.94x = 287,411.88 × 154,009.54
  4. Step 4: Simplify right side
    208,326.94x = 44,264,171,429.34
  5. Step 5: Solve for x
    x = 44,264,171,429.34/208,326.94
  6. Step 6: Final answer
    x = 212,474.54

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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.