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Finding the Fourth Proportional to 282,763.70, 424,145.55 and 85,771.70

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Solution

The fourth proportional to 282,763.70, 424,145.55 and 85,771.70 is: 128,657.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,763.70 : 424,145.55 = 85,771.70 : x
  2. Step 2: Convert to fraction form
    282,763.70/424,145.55 = 85,771.70/x
  3. Step 3: Cross multiply
    282,763.70x = 424,145.55 × 85,771.70
  4. Step 4: Simplify right side
    282,763.70x = 36,379,684,870.94
  5. Step 5: Solve for x
    x = 36,379,684,870.94/282,763.70
  6. Step 6: Final answer
    x = 128,657.55

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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.