Home / 345,864.93-518,897.64-143,423.43

Finding the Fourth Proportional to 345,864.93, 518,897.64 and 143,423.43

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Solution

The fourth proportional to 345,864.93, 518,897.64 and 143,423.43 is: 215,176.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,864.93 : 518,897.64 = 143,423.43 : x
  2. Step 2: Convert to fraction form
    345,864.93/518,897.64 = 143,423.43/x
  3. Step 3: Cross multiply
    345,864.93x = 518,897.64 × 143,423.43
  4. Step 4: Simplify right side
    345,864.93x = 74,422,079,347.71
  5. Step 5: Solve for x
    x = 74,422,079,347.71/345,864.93
  6. Step 6: Final answer
    x = 215,176.71

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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.