Home / 210,042.80-315,064.20-115,564.40

Finding the Fourth Proportional to 210,042.80, 315,064.20 and 115,564.40

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Solution

The fourth proportional to 210,042.80, 315,064.20 and 115,564.40 is: 173,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,042.80 : 315,064.20 = 115,564.40 : x
  2. Step 2: Convert to fraction form
    210,042.80/315,064.20 = 115,564.40/x
  3. Step 3: Cross multiply
    210,042.80x = 315,064.20 × 115,564.40
  4. Step 4: Simplify right side
    210,042.80x = 36,410,205,234.48
  5. Step 5: Solve for x
    x = 36,410,205,234.48/210,042.80
  6. Step 6: Final answer
    x = 173,346.60

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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.