Home / 289,231,476.21-399,197,369.93-171,822,031.29

Finding the Fourth Proportional to 289,231,476.21, 399,197,369.93 and 171,822,031.29

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Solution

The fourth proportional to 289,231,476.21, 399,197,369.93 and 171,822,031.29 is: 237,148,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,231,476.21 : 399,197,369.93 = 171,822,031.29 : x
  2. Step 2: Convert to fraction form
    289,231,476.21/399,197,369.93 = 171,822,031.29/x
  3. Step 3: Cross multiply
    289,231,476.21x = 399,197,369.93 × 171,822,031.29
  4. Step 4: Simplify right side
    289,231,476.21x = 68,590,902,986,139,056
  5. Step 5: Solve for x
    x = 68,590,902,986,139,056/289,231,476.21
  6. Step 6: Final answer
    x = 237,148,818.95

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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.