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Finding the Fourth Proportional to 357,052.98, 492,284.72 and 261,393.60

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Solution

The fourth proportional to 357,052.98, 492,284.72 and 261,393.60 is: 360,394.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,052.98 : 492,284.72 = 261,393.60 : x
  2. Step 2: Convert to fraction form
    357,052.98/492,284.72 = 261,393.60/x
  3. Step 3: Cross multiply
    357,052.98x = 492,284.72 × 261,393.60
  4. Step 4: Simplify right side
    357,052.98x = 128,680,075,185.79
  5. Step 5: Solve for x
    x = 128,680,075,185.79/357,052.98
  6. Step 6: Final answer
    x = 360,394.91

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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.