Home / 390,066,283.70-538,292,190.94-211,449,619.70

Finding the Fourth Proportional to 390,066,283.70, 538,292,190.94 and 211,449,619.70

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Solution

The fourth proportional to 390,066,283.70, 538,292,190.94 and 211,449,619.70 is: 291,800,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,066,283.70 : 538,292,190.94 = 211,449,619.70 : x
  2. Step 2: Convert to fraction form
    390,066,283.70/538,292,190.94 = 211,449,619.70/x
  3. Step 3: Cross multiply
    390,066,283.70x = 538,292,190.94 × 211,449,619.70
  4. Step 4: Simplify right side
    390,066,283.70x = 113,821,679,061,742,784
  5. Step 5: Solve for x
    x = 113,821,679,061,742,784/390,066,283.70
  6. Step 6: Final answer
    x = 291,800,865.18

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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.