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Finding the Fourth Proportional to 208,315.95, 287,474.58 and 112,820.46

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Solution

The fourth proportional to 208,315.95, 287,474.58 and 112,820.46 is: 155,691.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,315.95 : 287,474.58 = 112,820.46 : x
  2. Step 2: Convert to fraction form
    208,315.95/287,474.58 = 112,820.46/x
  3. Step 3: Cross multiply
    208,315.95x = 287,474.58 × 112,820.46
  4. Step 4: Simplify right side
    208,315.95x = 32,433,014,353.91
  5. Step 5: Solve for x
    x = 32,433,014,353.91/208,315.95
  6. Step 6: Final answer
    x = 155,691.46

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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.