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Finding the Fourth Proportional to 382,969.32, 528,153.60 and 239,742.40

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Solution

The fourth proportional to 382,969.32, 528,153.60 and 239,742.40 is: 330,629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,969.32 : 528,153.60 = 239,742.40 : x
  2. Step 2: Convert to fraction form
    382,969.32/528,153.60 = 239,742.40/x
  3. Step 3: Cross multiply
    382,969.32x = 528,153.60 × 239,742.40
  4. Step 4: Simplify right side
    382,969.32x = 126,620,811,632.64
  5. Step 5: Solve for x
    x = 126,620,811,632.64/382,969.32
  6. Step 6: Final answer
    x = 330,629.13

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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.