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Finding the Fourth Proportional to 350,490.40, 525,865.20 and 140,279.20

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Solution

The fourth proportional to 350,490.40, 525,865.20 and 140,279.20 is: 210,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,490.40 : 525,865.20 = 140,279.20 : x
  2. Step 2: Convert to fraction form
    350,490.40/525,865.20 = 140,279.20/x
  3. Step 3: Cross multiply
    350,490.40x = 525,865.20 × 140,279.20
  4. Step 4: Simplify right side
    350,490.40x = 73,767,949,563.84
  5. Step 5: Solve for x
    x = 73,767,949,563.84/350,490.40
  6. Step 6: Final answer
    x = 210,470.67

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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.