Home / 300,788,848.64-415,224,620.16-189,443,332.80

Finding the Fourth Proportional to 300,788,848.64, 415,224,620.16 and 189,443,332.80

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Solution

The fourth proportional to 300,788,848.64, 415,224,620.16 and 189,443,332.80 is: 261,517,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,788,848.64 : 415,224,620.16 = 189,443,332.80 : x
  2. Step 2: Convert to fraction form
    300,788,848.64/415,224,620.16 = 189,443,332.80/x
  3. Step 3: Cross multiply
    300,788,848.64x = 415,224,620.16 × 189,443,332.80
  4. Step 4: Simplify right side
    300,788,848.64x = 78,661,535,903,724,480
  5. Step 5: Solve for x
    x = 78,661,535,903,724,480/300,788,848.64
  6. Step 6: Final answer
    x = 261,517,460.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.