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Finding the Fourth Proportional to 382,674.06, 528,075.72 and 212,904.54

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Solution

The fourth proportional to 382,674.06, 528,075.72 and 212,904.54 is: 293,800.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,674.06 : 528,075.72 = 212,904.54 : x
  2. Step 2: Convert to fraction form
    382,674.06/528,075.72 = 212,904.54/x
  3. Step 3: Cross multiply
    382,674.06x = 528,075.72 × 212,904.54
  4. Step 4: Simplify right side
    382,674.06x = 112,429,718,251.77
  5. Step 5: Solve for x
    x = 112,429,718,251.77/382,674.06
  6. Step 6: Final answer
    x = 293,800.21

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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.