Home / 280,379,374.40-420,443,090.40-107,798,830.40

Finding the Fourth Proportional to 280,379,374.40, 420,443,090.40 and 107,798,830.40

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Solution

The fourth proportional to 280,379,374.40, 420,443,090.40 and 107,798,830.40 is: 161,649,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,379,374.40 : 420,443,090.40 = 107,798,830.40 : x
  2. Step 2: Convert to fraction form
    280,379,374.40/420,443,090.40 = 107,798,830.40/x
  3. Step 3: Cross multiply
    280,379,374.40x = 420,443,090.40 × 107,798,830.40
  4. Step 4: Simplify right side
    280,379,374.40x = 45,323,273,394,881,472
  5. Step 5: Solve for x
    x = 45,323,273,394,881,472/280,379,374.40
  6. Step 6: Final answer
    x = 161,649,812.84

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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.