Home / 221,223,781.80-331,851,615.93-84,909,165.30

Finding the Fourth Proportional to 221,223,781.80, 331,851,615.93 and 84,909,165.30

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Solution

The fourth proportional to 221,223,781.80, 331,851,615.93 and 84,909,165.30 is: 127,369,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,223,781.80 : 331,851,615.93 = 84,909,165.30 : x
  2. Step 2: Convert to fraction form
    221,223,781.80/331,851,615.93 = 84,909,165.30/x
  3. Step 3: Cross multiply
    221,223,781.80x = 331,851,615.93 × 84,909,165.30
  4. Step 4: Simplify right side
    221,223,781.80x = 28,177,243,712,072,484
  5. Step 5: Solve for x
    x = 28,177,243,712,072,484/221,223,781.80
  6. Step 6: Final answer
    x = 127,369,867.21

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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.