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Finding the Fourth Proportional to 440,138.40, 660,426.30 and 173,907.60

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Solution

The fourth proportional to 440,138.40, 660,426.30 and 173,907.60 is: 260,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,138.40 : 660,426.30 = 173,907.60 : x
  2. Step 2: Convert to fraction form
    440,138.40/660,426.30 = 173,907.60/x
  3. Step 3: Cross multiply
    440,138.40x = 660,426.30 × 173,907.60
  4. Step 4: Simplify right side
    440,138.40x = 114,853,152,809.88
  5. Step 5: Solve for x
    x = 114,853,152,809.88/440,138.40
  6. Step 6: Final answer
    x = 260,947.81

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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.