Home / 243,372,680.34-335,870,776.89-137,489,372.01

Finding the Fourth Proportional to 243,372,680.34, 335,870,776.89 and 137,489,372.01

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Solution

The fourth proportional to 243,372,680.34, 335,870,776.89 and 137,489,372.01 is: 189,744,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,372,680.34 : 335,870,776.89 = 137,489,372.01 : x
  2. Step 2: Convert to fraction form
    243,372,680.34/335,870,776.89 = 137,489,372.01/x
  3. Step 3: Cross multiply
    243,372,680.34x = 335,870,776.89 × 137,489,372.01
  4. Step 4: Simplify right side
    243,372,680.34x = 46,178,662,191,116,912
  5. Step 5: Solve for x
    x = 46,178,662,191,116,912/243,372,680.34
  6. Step 6: Final answer
    x = 189,744,642.36

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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.