Home / 288,005,771.71-397,449,018.41-155,846,769.28

Finding the Fourth Proportional to 288,005,771.71, 397,449,018.41 and 155,846,769.28

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Solution

The fourth proportional to 288,005,771.71, 397,449,018.41 and 155,846,769.28 is: 215,069,111.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,005,771.71 : 397,449,018.41 = 155,846,769.28 : x
  2. Step 2: Convert to fraction form
    288,005,771.71/397,449,018.41 = 155,846,769.28/x
  3. Step 3: Cross multiply
    288,005,771.71x = 397,449,018.41 × 155,846,769.28
  4. Step 4: Simplify right side
    288,005,771.71x = 61,941,145,471,926,504
  5. Step 5: Solve for x
    x = 61,941,145,471,926,504/288,005,771.71
  6. Step 6: Final answer
    x = 215,069,111.65

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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.