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Finding the Fourth Proportional to 296,958,498.40, 445,437,747.60 and 265,717,640.80

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Solution

The fourth proportional to 296,958,498.40, 445,437,747.60 and 265,717,640.80 is: 398,576,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,958,498.40 : 445,437,747.60 = 265,717,640.80 : x
  2. Step 2: Convert to fraction form
    296,958,498.40/445,437,747.60 = 265,717,640.80/x
  3. Step 3: Cross multiply
    296,958,498.40x = 445,437,747.60 × 265,717,640.80
  4. Step 4: Simplify right side
    296,958,498.40x = 118,360,667,415,537,872
  5. Step 5: Solve for x
    x = 118,360,667,415,537,872/296,958,498.40
  6. Step 6: Final answer
    x = 398,576,461.20

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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.