Home / 260,424,863.45-390,554,970.26-85,519,063.63

Finding the Fourth Proportional to 260,424,863.45, 390,554,970.26 and 85,519,063.63

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Solution

The fourth proportional to 260,424,863.45, 390,554,970.26 and 85,519,063.63 is: 128,251,561.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,424,863.45 : 390,554,970.26 = 85,519,063.63 : x
  2. Step 2: Convert to fraction form
    260,424,863.45/390,554,970.26 = 85,519,063.63/x
  3. Step 3: Cross multiply
    260,424,863.45x = 390,554,970.26 × 85,519,063.63
  4. Step 4: Simplify right side
    260,424,863.45x = 33,399,895,354,024,152
  5. Step 5: Solve for x
    x = 33,399,895,354,024,152/260,424,863.45
  6. Step 6: Final answer
    x = 128,251,561.36

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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.