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Finding the Fourth Proportional to 382,907.30, 528,403.29 and 239,746.28

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Solution

The fourth proportional to 382,907.30, 528,403.29 and 239,746.28 is: 330,844.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,907.30 : 528,403.29 = 239,746.28 : x
  2. Step 2: Convert to fraction form
    382,907.30/528,403.29 = 239,746.28/x
  3. Step 3: Cross multiply
    382,907.30x = 528,403.29 × 239,746.28
  4. Step 4: Simplify right side
    382,907.30x = 126,682,720,475.25
  5. Step 5: Solve for x
    x = 126,682,720,475.25/382,907.30
  6. Step 6: Final answer
    x = 330,844.36

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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.