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Finding the Fourth Proportional to 423,220.65, 635,009.06 and 263,430.22

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Solution

The fourth proportional to 423,220.65, 635,009.06 and 263,430.22 is: 395,256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,220.65 : 635,009.06 = 263,430.22 : x
  2. Step 2: Convert to fraction form
    423,220.65/635,009.06 = 263,430.22/x
  3. Step 3: Cross multiply
    423,220.65x = 635,009.06 × 263,430.22
  4. Step 4: Simplify right side
    423,220.65x = 167,280,576,377.79
  5. Step 5: Solve for x
    x = 167,280,576,377.79/423,220.65
  6. Step 6: Final answer
    x = 395,256.18

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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.