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Finding the Fourth Proportional to 631,459.36, 947,202 and 210,738.88

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Solution

The fourth proportional to 631,459.36, 947,202 and 210,738.88 is: 316,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,459.36 : 947,202 = 210,738.88 : x
  2. Step 2: Convert to fraction form
    631,459.36/947,202 = 210,738.88/x
  3. Step 3: Cross multiply
    631,459.36x = 947,202 × 210,738.88
  4. Step 4: Simplify right side
    631,459.36x = 199,612,288,613.76
  5. Step 5: Solve for x
    x = 199,612,288,613.76/631,459.36
  6. Step 6: Final answer
    x = 316,112.65

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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.