Home / 430,094,900.99-645,146,085.09-138,962,054.85

Finding the Fourth Proportional to 430,094,900.99, 645,146,085.09 and 138,962,054.85

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Solution

The fourth proportional to 430,094,900.99, 645,146,085.09 and 138,962,054.85 is: 208,444,288.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,094,900.99 : 645,146,085.09 = 138,962,054.85 : x
  2. Step 2: Convert to fraction form
    430,094,900.99/645,146,085.09 = 138,962,054.85/x
  3. Step 3: Cross multiply
    430,094,900.99x = 645,146,085.09 × 138,962,054.85
  4. Step 4: Simplify right side
    430,094,900.99x = 89,650,825,662,539,344
  5. Step 5: Solve for x
    x = 89,650,825,662,539,344/430,094,900.99
  6. Step 6: Final answer
    x = 208,444,288.59

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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.