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Finding the Fourth Proportional to 423,603, 584,703.36 and 272,700

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Solution

The fourth proportional to 423,603, 584,703.36 and 272,700 is: 376,410.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,603 : 584,703.36 = 272,700 : x
  2. Step 2: Convert to fraction form
    423,603/584,703.36 = 272,700/x
  3. Step 3: Cross multiply
    423,603x = 584,703.36 × 272,700
  4. Step 4: Simplify right side
    423,603x = 159,448,606,272
  5. Step 5: Solve for x
    x = 159,448,606,272/423,603
  6. Step 6: Final answer
    x = 376,410.47

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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.