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Finding the Fourth Proportional to 242,313.83, 334,424.42 and 138,988.33

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Solution

The fourth proportional to 242,313.83, 334,424.42 and 138,988.33 is: 191,821.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,313.83 : 334,424.42 = 138,988.33 : x
  2. Step 2: Convert to fraction form
    242,313.83/334,424.42 = 138,988.33/x
  3. Step 3: Cross multiply
    242,313.83x = 334,424.42 × 138,988.33
  4. Step 4: Simplify right side
    242,313.83x = 46,481,091,968.70
  5. Step 5: Solve for x
    x = 46,481,091,968.70/242,313.83
  6. Step 6: Final answer
    x = 191,821.87

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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.