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Finding the Fourth Proportional to 660,167.64, 990,240.84 and 210,885.60

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Solution

The fourth proportional to 660,167.64, 990,240.84 and 210,885.60 is: 316,325.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,167.64 : 990,240.84 = 210,885.60 : x
  2. Step 2: Convert to fraction form
    660,167.64/990,240.84 = 210,885.60/x
  3. Step 3: Cross multiply
    660,167.64x = 990,240.84 × 210,885.60
  4. Step 4: Simplify right side
    660,167.64x = 208,827,533,687.90
  5. Step 5: Solve for x
    x = 208,827,533,687.90/660,167.64
  6. Step 6: Final answer
    x = 316,325.01

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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.