Home / 393,320,090.66-542,781,643.10-217,108,040.04

Finding the Fourth Proportional to 393,320,090.66, 542,781,643.10 and 217,108,040.04

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Solution

The fourth proportional to 393,320,090.66, 542,781,643.10 and 217,108,040.04 is: 299,609,049.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,320,090.66 : 542,781,643.10 = 217,108,040.04 : x
  2. Step 2: Convert to fraction form
    393,320,090.66/542,781,643.10 = 217,108,040.04/x
  3. Step 3: Cross multiply
    393,320,090.66x = 542,781,643.10 × 217,108,040.04
  4. Step 4: Simplify right side
    393,320,090.66x = 117,842,258,702,046,256
  5. Step 5: Solve for x
    x = 117,842,258,702,046,256/393,320,090.66
  6. Step 6: Final answer
    x = 299,609,049.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.