Home / 258,975,262.60-388,462,893.90-129,980,753.80

Finding the Fourth Proportional to 258,975,262.60, 388,462,893.90 and 129,980,753.80

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Solution

The fourth proportional to 258,975,262.60, 388,462,893.90 and 129,980,753.80 is: 194,971,130.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975,262.60 : 388,462,893.90 = 129,980,753.80 : x
  2. Step 2: Convert to fraction form
    258,975,262.60/388,462,893.90 = 129,980,753.80/x
  3. Step 3: Cross multiply
    258,975,262.60x = 388,462,893.90 × 129,980,753.80
  4. Step 4: Simplify right side
    258,975,262.60x = 50,492,699,772,451,416
  5. Step 5: Solve for x
    x = 50,492,699,772,451,416/258,975,262.60
  6. Step 6: Final answer
    x = 194,971,130.70

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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.