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Finding the Fourth Proportional to 315,622.65, 435,270.80 and 246,721.22

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Solution

The fourth proportional to 315,622.65, 435,270.80 and 246,721.22 is: 340,249.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,622.65 : 435,270.80 = 246,721.22 : x
  2. Step 2: Convert to fraction form
    315,622.65/435,270.80 = 246,721.22/x
  3. Step 3: Cross multiply
    315,622.65x = 435,270.80 × 246,721.22
  4. Step 4: Simplify right side
    315,622.65x = 107,390,541,491.28
  5. Step 5: Solve for x
    x = 107,390,541,491.28/315,622.65
  6. Step 6: Final answer
    x = 340,249.79

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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.