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Finding the Fourth Proportional to 382,561.80, 528,036.66 and 269,435.40

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Solution

The fourth proportional to 382,561.80, 528,036.66 and 269,435.40 is: 371,892.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,561.80 : 528,036.66 = 269,435.40 : x
  2. Step 2: Convert to fraction form
    382,561.80/528,036.66 = 269,435.40/x
  3. Step 3: Cross multiply
    382,561.80x = 528,036.66 × 269,435.40
  4. Step 4: Simplify right side
    382,561.80x = 142,271,768,701.76
  5. Step 5: Solve for x
    x = 142,271,768,701.76/382,561.80
  6. Step 6: Final answer
    x = 371,892.25

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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.