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Finding the Fourth Proportional to 538,525,603.70, 807,788,405.55 and 210,892,227.20

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Solution

The fourth proportional to 538,525,603.70, 807,788,405.55 and 210,892,227.20 is: 316,338,340.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,525,603.70 : 807,788,405.55 = 210,892,227.20 : x
  2. Step 2: Convert to fraction form
    538,525,603.70/807,788,405.55 = 210,892,227.20/x
  3. Step 3: Cross multiply
    538,525,603.70x = 807,788,405.55 × 210,892,227.20
  4. Step 4: Simplify right side
    538,525,603.70x = 170,356,295,952,776,320
  5. Step 5: Solve for x
    x = 170,356,295,952,776,320/538,525,603.70
  6. Step 6: Final answer
    x = 316,338,340.80

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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.