Home / 258,975,263.60-388,462,895.40-129,980,754.80

Finding the Fourth Proportional to 258,975,263.60, 388,462,895.40 and 129,980,754.80

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Solution

The fourth proportional to 258,975,263.60, 388,462,895.40 and 129,980,754.80 is: 194,971,132.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975,263.60 : 388,462,895.40 = 129,980,754.80 : x
  2. Step 2: Convert to fraction form
    258,975,263.60/388,462,895.40 = 129,980,754.80/x
  3. Step 3: Cross multiply
    258,975,263.60x = 388,462,895.40 × 129,980,754.80
  4. Step 4: Simplify right side
    258,975,263.60x = 50,492,700,355,885,440
  5. Step 5: Solve for x
    x = 50,492,700,355,885,440/258,975,263.60
  6. Step 6: Final answer
    x = 194,971,132.20

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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.