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Finding the Fourth Proportional to 489,384.32, 734,075.11 and 134,398.68

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Solution

The fourth proportional to 489,384.32, 734,075.11 and 134,398.68 is: 201,597.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,384.32 : 734,075.11 = 134,398.68 : x
  2. Step 2: Convert to fraction form
    489,384.32/734,075.11 = 134,398.68/x
  3. Step 3: Cross multiply
    489,384.32x = 734,075.11 × 134,398.68
  4. Step 4: Simplify right side
    489,384.32x = 98,658,725,804.85
  5. Step 5: Solve for x
    x = 98,658,725,804.85/489,384.32
  6. Step 6: Final answer
    x = 201,597.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.