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Finding the Fourth Proportional to 660,351.84, 990,479.31 and 210,952.02

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Solution

The fourth proportional to 660,351.84, 990,479.31 and 210,952.02 is: 316,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,351.84 : 990,479.31 = 210,952.02 : x
  2. Step 2: Convert to fraction form
    660,351.84/990,479.31 = 210,952.02/x
  3. Step 3: Cross multiply
    660,351.84x = 990,479.31 × 210,952.02
  4. Step 4: Simplify right side
    660,351.84x = 208,943,611,212.71
  5. Step 5: Solve for x
    x = 208,943,611,212.71/660,351.84
  6. Step 6: Final answer
    x = 316,412.55

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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.