Home / 315,814.37-435,834.59-172,583.64

Finding the Fourth Proportional to 315,814.37, 435,834.59 and 172,583.64

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Solution

The fourth proportional to 315,814.37, 435,834.59 and 172,583.64 is: 238,171.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,814.37 : 435,834.59 = 172,583.64 : x
  2. Step 2: Convert to fraction form
    315,814.37/435,834.59 = 172,583.64/x
  3. Step 3: Cross multiply
    315,814.37x = 435,834.59 × 172,583.64
  4. Step 4: Simplify right side
    315,814.37x = 75,217,919,117.19
  5. Step 5: Solve for x
    x = 75,217,919,117.19/315,814.37
  6. Step 6: Final answer
    x = 238,171.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.