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Finding the Fourth Proportional to 550,031.40, 825,703.20 and 310,336.20

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Solution

The fourth proportional to 550,031.40, 825,703.20 and 310,336.20 is: 465,874.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,031.40 : 825,703.20 = 310,336.20 : x
  2. Step 2: Convert to fraction form
    550,031.40/825,703.20 = 310,336.20/x
  3. Step 3: Cross multiply
    550,031.40x = 825,703.20 × 310,336.20
  4. Step 4: Simplify right side
    550,031.40x = 256,245,593,415.84
  5. Step 5: Solve for x
    x = 256,245,593,415.84/550,031.40
  6. Step 6: Final answer
    x = 465,874.48

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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.