Home / 345,009,477.69-517,211,884.04-129,749,891.13

Finding the Fourth Proportional to 345,009,477.69, 517,211,884.04 and 129,749,891.13

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Solution

The fourth proportional to 345,009,477.69, 517,211,884.04 and 129,749,891.13 is: 194,511,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,009,477.69 : 517,211,884.04 = 129,749,891.13 : x
  2. Step 2: Convert to fraction form
    345,009,477.69/517,211,884.04 = 129,749,891.13/x
  3. Step 3: Cross multiply
    345,009,477.69x = 517,211,884.04 × 129,749,891.13
  4. Step 4: Simplify right side
    345,009,477.69x = 67,108,185,644,683,440
  5. Step 5: Solve for x
    x = 67,108,185,644,683,440/345,009,477.69
  6. Step 6: Final answer
    x = 194,511,136.60

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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.