Home / 281,066,953.79-387,884,519.47-155,619,152.51

Finding the Fourth Proportional to 281,066,953.79, 387,884,519.47 and 155,619,152.51

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Solution

The fourth proportional to 281,066,953.79, 387,884,519.47 and 155,619,152.51 is: 214,761,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,066,953.79 : 387,884,519.47 = 155,619,152.51 : x
  2. Step 2: Convert to fraction form
    281,066,953.79/387,884,519.47 = 155,619,152.51/x
  3. Step 3: Cross multiply
    281,066,953.79x = 387,884,519.47 × 155,619,152.51
  4. Step 4: Simplify right side
    281,066,953.79x = 60,362,260,189,923,536
  5. Step 5: Solve for x
    x = 60,362,260,189,923,536/281,066,953.79
  6. Step 6: Final answer
    x = 214,761,142.76

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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.