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Finding the Fourth Proportional to 265,866,895.49, 398,832,168.20 and 81,610,223.69

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Solution

The fourth proportional to 265,866,895.49, 398,832,168.20 and 81,610,223.69 is: 122,425,104.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,866,895.49 : 398,832,168.20 = 81,610,223.69 : x
  2. Step 2: Convert to fraction form
    265,866,895.49/398,832,168.20 = 81,610,223.69/x
  3. Step 3: Cross multiply
    265,866,895.49x = 398,832,168.20 × 81,610,223.69
  4. Step 4: Simplify right side
    265,866,895.49x = 32,548,782,462,158,732
  5. Step 5: Solve for x
    x = 32,548,782,462,158,732/265,866,895.49
  6. Step 6: Final answer
    x = 122,425,104.50

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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.