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Finding the Fourth Proportional to 350,420.70, 525,767.40 and 140,118.78

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Solution

The fourth proportional to 350,420.70, 525,767.40 and 140,118.78 is: 210,232.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,420.70 : 525,767.40 = 140,118.78 : x
  2. Step 2: Convert to fraction form
    350,420.70/525,767.40 = 140,118.78/x
  3. Step 3: Cross multiply
    350,420.70x = 525,767.40 × 140,118.78
  4. Step 4: Simplify right side
    350,420.70x = 73,669,886,651.77
  5. Step 5: Solve for x
    x = 73,669,886,651.77/350,420.70
  6. Step 6: Final answer
    x = 210,232.69

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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.