Home / 210,391.04-315,589.36-70,149.72

Finding the Fourth Proportional to 210,391.04, 315,589.36 and 70,149.72

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Solution

The fourth proportional to 210,391.04, 315,589.36 and 70,149.72 is: 105,225.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,391.04 : 315,589.36 = 70,149.72 : x
  2. Step 2: Convert to fraction form
    210,391.04/315,589.36 = 70,149.72/x
  3. Step 3: Cross multiply
    210,391.04x = 315,589.36 × 70,149.72
  4. Step 4: Simplify right side
    210,391.04x = 22,138,505,238.98
  5. Step 5: Solve for x
    x = 22,138,505,238.98/210,391.04
  6. Step 6: Final answer
    x = 105,225.51

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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.