Home / 261,210,667.67-391,872,688.55-79,453,121.75

Finding the Fourth Proportional to 261,210,667.67, 391,872,688.55 and 79,453,121.75

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Solution

The fourth proportional to 261,210,667.67, 391,872,688.55 and 79,453,121.75 is: 119,196,925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,210,667.67 : 391,872,688.55 = 79,453,121.75 : x
  2. Step 2: Convert to fraction form
    261,210,667.67/391,872,688.55 = 79,453,121.75/x
  3. Step 3: Cross multiply
    261,210,667.67x = 391,872,688.55 × 79,453,121.75
  4. Step 4: Simplify right side
    261,210,667.67x = 31,135,508,433,862,980
  5. Step 5: Solve for x
    x = 31,135,508,433,862,980/261,210,667.67
  6. Step 6: Final answer
    x = 119,196,925.27

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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.