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Finding the Fourth Proportional to 660,353.84, 990,482.30 and 210,954.02

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Solution

The fourth proportional to 660,353.84, 990,482.30 and 210,954.02 is: 316,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,353.84 : 990,482.30 = 210,954.02 : x
  2. Step 2: Convert to fraction form
    660,353.84/990,482.30 = 210,954.02/x
  3. Step 3: Cross multiply
    660,353.84x = 990,482.30 × 210,954.02
  4. Step 4: Simplify right side
    660,353.84x = 208,946,222,923.85
  5. Step 5: Solve for x
    x = 208,946,222,923.85/660,353.84
  6. Step 6: Final answer
    x = 316,415.55

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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.