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Finding the Fourth Proportional to 631,405.60, 947,116.61 and 210,681.48

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Solution

The fourth proportional to 631,405.60, 947,116.61 and 210,681.48 is: 316,024.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,405.60 : 947,116.61 = 210,681.48 : x
  2. Step 2: Convert to fraction form
    631,405.60/947,116.61 = 210,681.48/x
  3. Step 3: Cross multiply
    631,405.60x = 947,116.61 × 210,681.48
  4. Step 4: Simplify right side
    631,405.60x = 199,539,923,338.39
  5. Step 5: Solve for x
    x = 199,539,923,338.39/631,405.60
  6. Step 6: Final answer
    x = 316,024.95

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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.