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Finding the Fourth Proportional to 603,567.90, 905,351.67 and 154,289.70

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Solution

The fourth proportional to 603,567.90, 905,351.67 and 154,289.70 is: 231,434.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,567.90 : 905,351.67 = 154,289.70 : x
  2. Step 2: Convert to fraction form
    603,567.90/905,351.67 = 154,289.70/x
  3. Step 3: Cross multiply
    603,567.90x = 905,351.67 × 154,289.70
  4. Step 4: Simplify right side
    603,567.90x = 139,686,437,558.80
  5. Step 5: Solve for x
    x = 139,686,437,558.80/603,567.90
  6. Step 6: Final answer
    x = 231,434.50

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Double scale
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Similar ratio
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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.