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Finding the Fourth Proportional to 217,636, 300,338.76 and 127,054.24

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Solution

The fourth proportional to 217,636, 300,338.76 and 127,054.24 is: 175,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,636 : 300,338.76 = 127,054.24 : x
  2. Step 2: Convert to fraction form
    217,636/300,338.76 = 127,054.24/x
  3. Step 3: Cross multiply
    217,636x = 300,338.76 × 127,054.24
  4. Step 4: Simplify right side
    217,636x = 38,159,312,894.34
  5. Step 5: Solve for x
    x = 38,159,312,894.34/217,636
  6. Step 6: Final answer
    x = 175,335.48

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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.