Home / 258,975,421.40-388,463,132.10-177,346,083.80

Finding the Fourth Proportional to 258,975,421.40, 388,463,132.10 and 177,346,083.80

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Solution

The fourth proportional to 258,975,421.40, 388,463,132.10 and 177,346,083.80 is: 266,019,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975,421.40 : 388,463,132.10 = 177,346,083.80 : x
  2. Step 2: Convert to fraction form
    258,975,421.40/388,463,132.10 = 177,346,083.80/x
  3. Step 3: Cross multiply
    258,975,421.40x = 388,463,132.10 × 177,346,083.80
  4. Step 4: Simplify right side
    258,975,421.40x = 68,892,415,178,617,080
  5. Step 5: Solve for x
    x = 68,892,415,178,617,080/258,975,421.40
  6. Step 6: Final answer
    x = 266,019,125.70

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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.