Home / 280,167,133.86-420,505,721.73-149,119,429.82

Finding the Fourth Proportional to 280,167,133.86, 420,505,721.73 and 149,119,429.82

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Solution

The fourth proportional to 280,167,133.86, 420,505,721.73 and 149,119,429.82 is: 223,814,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,167,133.86 : 420,505,721.73 = 149,119,429.82 : x
  2. Step 2: Convert to fraction form
    280,167,133.86/420,505,721.73 = 149,119,429.82/x
  3. Step 3: Cross multiply
    280,167,133.86x = 420,505,721.73 × 149,119,429.82
  4. Step 4: Simplify right side
    280,167,133.86x = 62,705,573,460,425,184
  5. Step 5: Solve for x
    x = 62,705,573,460,425,184/280,167,133.86
  6. Step 6: Final answer
    x = 223,814,880.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.