Home / 287,605,090.80-431,407,636.20-115,108,527.60

Finding the Fourth Proportional to 287,605,090.80, 431,407,636.20 and 115,108,527.60

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Solution

The fourth proportional to 287,605,090.80, 431,407,636.20 and 115,108,527.60 is: 172,662,791.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,605,090.80 : 431,407,636.20 = 115,108,527.60 : x
  2. Step 2: Convert to fraction form
    287,605,090.80/431,407,636.20 = 115,108,527.60/x
  3. Step 3: Cross multiply
    287,605,090.80x = 431,407,636.20 × 115,108,527.60
  4. Step 4: Simplify right side
    287,605,090.80x = 49,658,697,798,378,456
  5. Step 5: Solve for x
    x = 49,658,697,798,378,456/287,605,090.80
  6. Step 6: Final answer
    x = 172,662,791.40

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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.