Home / 289,172,548.64-399,054,031.32-163,721,507.36

Finding the Fourth Proportional to 289,172,548.64, 399,054,031.32 and 163,721,507.36

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Solution

The fourth proportional to 289,172,548.64, 399,054,031.32 and 163,721,507.36 is: 225,933,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172,548.64 : 399,054,031.32 = 163,721,507.36 : x
  2. Step 2: Convert to fraction form
    289,172,548.64/399,054,031.32 = 163,721,507.36/x
  3. Step 3: Cross multiply
    289,172,548.64x = 399,054,031.32 × 163,721,507.36
  4. Step 4: Simplify right side
    289,172,548.64x = 65,333,727,525,795,056
  5. Step 5: Solve for x
    x = 65,333,727,525,795,056/289,172,548.64
  6. Step 6: Final answer
    x = 225,933,366.89

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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.