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Finding the Fourth Proportional to 607,607.70, 911,325.15 and 208,266.90

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Solution

The fourth proportional to 607,607.70, 911,325.15 and 208,266.90 is: 312,370.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,607.70 : 911,325.15 = 208,266.90 : x
  2. Step 2: Convert to fraction form
    607,607.70/911,325.15 = 208,266.90/x
  3. Step 3: Cross multiply
    607,607.70x = 911,325.15 × 208,266.90
  4. Step 4: Simplify right side
    607,607.70x = 189,798,863,882.54
  5. Step 5: Solve for x
    x = 189,798,863,882.54/607,607.70
  6. Step 6: Final answer
    x = 312,370.74

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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.