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Finding the Fourth Proportional to 380,923.81, 525,728.40 and 235,776.15

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Solution

The fourth proportional to 380,923.81, 525,728.40 and 235,776.15 is: 325,404.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,923.81 : 525,728.40 = 235,776.15 : x
  2. Step 2: Convert to fraction form
    380,923.81/525,728.40 = 235,776.15/x
  3. Step 3: Cross multiply
    380,923.81x = 525,728.40 × 235,776.15
  4. Step 4: Simplify right side
    380,923.81x = 123,954,217,010.34
  5. Step 5: Solve for x
    x = 123,954,217,010.34/380,923.81
  6. Step 6: Final answer
    x = 325,404.23

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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.