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Finding the Fourth Proportional to 631,908.14, 872,189.94 and 360,137.22

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Solution

The fourth proportional to 631,908.14, 872,189.94 and 360,137.22 is: 497,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,908.14 : 872,189.94 = 360,137.22 : x
  2. Step 2: Convert to fraction form
    631,908.14/872,189.94 = 360,137.22/x
  3. Step 3: Cross multiply
    631,908.14x = 872,189.94 × 360,137.22
  4. Step 4: Simplify right side
    631,908.14x = 314,108,060,303.57
  5. Step 5: Solve for x
    x = 314,108,060,303.57/631,908.14
  6. Step 6: Final answer
    x = 497,078.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.