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Finding the Fourth Proportional to 210,415.70, 315,624.77 and 70,173.92

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Solution

The fourth proportional to 210,415.70, 315,624.77 and 70,173.92 is: 105,261.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,415.70 : 315,624.77 = 70,173.92 : x
  2. Step 2: Convert to fraction form
    210,415.70/315,624.77 = 70,173.92/x
  3. Step 3: Cross multiply
    210,415.70x = 315,624.77 × 70,173.92
  4. Step 4: Simplify right side
    210,415.70x = 22,148,627,360.00
  5. Step 5: Solve for x
    x = 22,148,627,360.00/210,415.70
  6. Step 6: Final answer
    x = 105,261.29

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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.