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Finding the Fourth Proportional to 424,280.62, 636,284.88 and 139,907.26

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Solution

The fourth proportional to 424,280.62, 636,284.88 and 139,907.26 is: 209,816.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,280.62 : 636,284.88 = 139,907.26 : x
  2. Step 2: Convert to fraction form
    424,280.62/636,284.88 = 139,907.26/x
  3. Step 3: Cross multiply
    424,280.62x = 636,284.88 × 139,907.26
  4. Step 4: Simplify right side
    424,280.62x = 89,020,874,140.23
  5. Step 5: Solve for x
    x = 89,020,874,140.23/424,280.62
  6. Step 6: Final answer
    x = 209,816.03

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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.