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Finding the Fourth Proportional to 405,270.72, 607,534.08 and 155,764.80

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Solution

The fourth proportional to 405,270.72, 607,534.08 and 155,764.80 is: 233,504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,270.72 : 607,534.08 = 155,764.80 : x
  2. Step 2: Convert to fraction form
    405,270.72/607,534.08 = 155,764.80/x
  3. Step 3: Cross multiply
    405,270.72x = 607,534.08 × 155,764.80
  4. Step 4: Simplify right side
    405,270.72x = 94,632,424,464.38
  5. Step 5: Solve for x
    x = 94,632,424,464.38/405,270.72
  6. Step 6: Final answer
    x = 233,504.22

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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.