Home / 384,924-531,428.40-251,021.28

Finding the Fourth Proportional to 384,924, 531,428.40 and 251,021.28

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Solution

The fourth proportional to 384,924, 531,428.40 and 251,021.28 is: 346,561.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,924 : 531,428.40 = 251,021.28 : x
  2. Step 2: Convert to fraction form
    384,924/531,428.40 = 251,021.28/x
  3. Step 3: Cross multiply
    384,924x = 531,428.40 × 251,021.28
  4. Step 4: Simplify right side
    384,924x = 133,399,837,196.35
  5. Step 5: Solve for x
    x = 133,399,837,196.35/384,924
  6. Step 6: Final answer
    x = 346,561.50

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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.