Home / 285,230,031.36-428,004,017.28-154,069,664.64

Finding the Fourth Proportional to 285,230,031.36, 428,004,017.28 and 154,069,664.64

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Solution

The fourth proportional to 285,230,031.36, 428,004,017.28 and 154,069,664.64 is: 231,190,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,230,031.36 : 428,004,017.28 = 154,069,664.64 : x
  2. Step 2: Convert to fraction form
    285,230,031.36/428,004,017.28 = 154,069,664.64/x
  3. Step 3: Cross multiply
    285,230,031.36x = 428,004,017.28 × 154,069,664.64
  4. Step 4: Simplify right side
    285,230,031.36x = 65,942,435,406,902,352
  5. Step 5: Solve for x
    x = 65,942,435,406,902,352/285,230,031.36
  6. Step 6: Final answer
    x = 231,190,366.22

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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.