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Finding the Fourth Proportional to 282,794.50, 424,191.75 and 85,802.50

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Solution

The fourth proportional to 282,794.50, 424,191.75 and 85,802.50 is: 128,703.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,794.50 : 424,191.75 = 85,802.50 : x
  2. Step 2: Convert to fraction form
    282,794.50/424,191.75 = 85,802.50/x
  3. Step 3: Cross multiply
    282,794.50x = 424,191.75 × 85,802.50
  4. Step 4: Simplify right side
    282,794.50x = 36,396,712,629.38
  5. Step 5: Solve for x
    x = 36,396,712,629.38/282,794.50
  6. Step 6: Final answer
    x = 128,703.75

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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.