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Finding the Fourth Proportional to 217,395.07, 299,867.12 and 157,054.39

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Solution

The fourth proportional to 217,395.07, 299,867.12 and 157,054.39 is: 216,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,395.07 : 299,867.12 = 157,054.39 : x
  2. Step 2: Convert to fraction form
    217,395.07/299,867.12 = 157,054.39/x
  3. Step 3: Cross multiply
    217,395.07x = 299,867.12 × 157,054.39
  4. Step 4: Simplify right side
    217,395.07x = 47,095,446,113.32
  5. Step 5: Solve for x
    x = 47,095,446,113.32/217,395.07
  6. Step 6: Final answer
    x = 216,635.30

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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.