Home / 266,780,702.63-400,307,853.88-128,724,048.37

Finding the Fourth Proportional to 266,780,702.63, 400,307,853.88 and 128,724,048.37

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Solution

The fourth proportional to 266,780,702.63, 400,307,853.88 and 128,724,048.37 is: 193,152,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,780,702.63 : 400,307,853.88 = 128,724,048.37 : x
  2. Step 2: Convert to fraction form
    266,780,702.63/400,307,853.88 = 128,724,048.37/x
  3. Step 3: Cross multiply
    266,780,702.63x = 400,307,853.88 × 128,724,048.37
  4. Step 4: Simplify right side
    266,780,702.63x = 51,529,247,545,740,016
  5. Step 5: Solve for x
    x = 51,529,247,545,740,016/266,780,702.63
  6. Step 6: Final answer
    x = 193,152,079.73

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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.