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Finding the Fourth Proportional to 382,948, 528,480.40 and 239,662.24

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Solution

The fourth proportional to 382,948, 528,480.40 and 239,662.24 is: 330,741.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,948 : 528,480.40 = 239,662.24 : x
  2. Step 2: Convert to fraction form
    382,948/528,480.40 = 239,662.24/x
  3. Step 3: Cross multiply
    382,948x = 528,480.40 × 239,662.24
  4. Step 4: Simplify right side
    382,948x = 126,656,796,460.10
  5. Step 5: Solve for x
    x = 126,656,796,460.10/382,948
  6. Step 6: Final answer
    x = 330,741.50

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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.