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Finding the Fourth Proportional to 631,906.14, 872,187.18 and 360,135.22

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Solution

The fourth proportional to 631,906.14, 872,187.18 and 360,135.22 is: 497,075.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,906.14 : 872,187.18 = 360,135.22 : x
  2. Step 2: Convert to fraction form
    631,906.14/872,187.18 = 360,135.22/x
  3. Step 3: Cross multiply
    631,906.14x = 872,187.18 × 360,135.22
  4. Step 4: Simplify right side
    631,906.14x = 314,105,321,950.48
  5. Step 5: Solve for x
    x = 314,105,321,950.48/631,906.14
  6. Step 6: Final answer
    x = 497,075.91

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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.