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Finding the Fourth Proportional to 208,017.80, 312,026.70 and 155,529.80

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Solution

The fourth proportional to 208,017.80, 312,026.70 and 155,529.80 is: 233,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,017.80 : 312,026.70 = 155,529.80 : x
  2. Step 2: Convert to fraction form
    208,017.80/312,026.70 = 155,529.80/x
  3. Step 3: Cross multiply
    208,017.80x = 312,026.70 × 155,529.80
  4. Step 4: Simplify right side
    208,017.80x = 48,529,450,245.66
  5. Step 5: Solve for x
    x = 48,529,450,245.66/208,017.80
  6. Step 6: Final answer
    x = 233,294.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.