Home / 280,057,718.70-420,405,442.65-165,107,030.40

Finding the Fourth Proportional to 280,057,718.70, 420,405,442.65 and 165,107,030.40

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Solution

The fourth proportional to 280,057,718.70, 420,405,442.65 and 165,107,030.40 is: 247,848,531.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,057,718.70 : 420,405,442.65 = 165,107,030.40 : x
  2. Step 2: Convert to fraction form
    280,057,718.70/420,405,442.65 = 165,107,030.40/x
  3. Step 3: Cross multiply
    280,057,718.70x = 420,405,442.65 × 165,107,030.40
  4. Step 4: Simplify right side
    280,057,718.70x = 69,411,894,199,939,008
  5. Step 5: Solve for x
    x = 69,411,894,199,939,008/280,057,718.70
  6. Step 6: Final answer
    x = 247,848,531.09

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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.