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Finding the Fourth Proportional to 660,244.96, 989,995.63 and 210,860.20

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Solution

The fourth proportional to 660,244.96, 989,995.63 and 210,860.20 is: 316,171.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,244.96 : 989,995.63 = 210,860.20 : x
  2. Step 2: Convert to fraction form
    660,244.96/989,995.63 = 210,860.20/x
  3. Step 3: Cross multiply
    660,244.96x = 989,995.63 × 210,860.20
  4. Step 4: Simplify right side
    660,244.96x = 208,750,675,486.63
  5. Step 5: Solve for x
    x = 208,750,675,486.63/660,244.96
  6. Step 6: Final answer
    x = 316,171.55

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1.5x scale

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.