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Finding the Fourth Proportional to 538,525,643.70, 807,788,465.55 and 210,892,267.20

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Solution

The fourth proportional to 538,525,643.70, 807,788,465.55 and 210,892,267.20 is: 316,338,400.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,525,643.70 : 807,788,465.55 = 210,892,267.20 : x
  2. Step 2: Convert to fraction form
    538,525,643.70/807,788,465.55 = 210,892,267.20/x
  3. Step 3: Cross multiply
    538,525,643.70x = 807,788,465.55 × 210,892,267.20
  4. Step 4: Simplify right side
    538,525,643.70x = 170,356,340,917,848,576
  5. Step 5: Solve for x
    x = 170,356,340,917,848,576/538,525,643.70
  6. Step 6: Final answer
    x = 316,338,400.80

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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.