Home / 261,083,218.51-391,490,056.92-76,826,748.07

Finding the Fourth Proportional to 261,083,218.51, 391,490,056.92 and 76,826,748.07

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Solution

The fourth proportional to 261,083,218.51, 391,490,056.92 and 76,826,748.07 is: 115,200,464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,083,218.51 : 391,490,056.92 = 76,826,748.07 : x
  2. Step 2: Convert to fraction form
    261,083,218.51/391,490,056.92 = 76,826,748.07/x
  3. Step 3: Cross multiply
    261,083,218.51x = 391,490,056.92 × 76,826,748.07
  4. Step 4: Simplify right side
    261,083,218.51x = 30,076,907,972,945,352
  5. Step 5: Solve for x
    x = 30,076,907,972,945,352/261,083,218.51
  6. Step 6: Final answer
    x = 115,200,464.22

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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.