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Finding the Fourth Proportional to 218,507.36, 301,545.79 and 123,017.47

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Solution

The fourth proportional to 218,507.36, 301,545.79 and 123,017.47 is: 169,767.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,507.36 : 301,545.79 = 123,017.47 : x
  2. Step 2: Convert to fraction form
    218,507.36/301,545.79 = 123,017.47/x
  3. Step 3: Cross multiply
    218,507.36x = 301,545.79 × 123,017.47
  4. Step 4: Simplify right side
    218,507.36x = 37,095,399,113.54
  5. Step 5: Solve for x
    x = 37,095,399,113.54/218,507.36
  6. Step 6: Final answer
    x = 169,767.28

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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.