Home / 257,788,987.20-386,683,480.80-143,127,201.60

Finding the Fourth Proportional to 257,788,987.20, 386,683,480.80 and 143,127,201.60

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Solution

The fourth proportional to 257,788,987.20, 386,683,480.80 and 143,127,201.60 is: 214,690,802.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,788,987.20 : 386,683,480.80 = 143,127,201.60 : x
  2. Step 2: Convert to fraction form
    257,788,987.20/386,683,480.80 = 143,127,201.60/x
  3. Step 3: Cross multiply
    257,788,987.20x = 386,683,480.80 × 143,127,201.60
  4. Step 4: Simplify right side
    257,788,987.20x = 55,344,924,511,851,328
  5. Step 5: Solve for x
    x = 55,344,924,511,851,328/257,788,987.20
  6. Step 6: Final answer
    x = 214,690,802.40

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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.