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Finding the Fourth Proportional to 487,129, 672,210.77 and 269,324.99

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Solution

The fourth proportional to 487,129, 672,210.77 and 269,324.99 is: 371,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,129 : 672,210.77 = 269,324.99 : x
  2. Step 2: Convert to fraction form
    487,129/672,210.77 = 269,324.99/x
  3. Step 3: Cross multiply
    487,129x = 672,210.77 × 269,324.99
  4. Step 4: Simplify right side
    487,129x = 181,043,158,908.14
  5. Step 5: Solve for x
    x = 181,043,158,908.14/487,129
  6. Step 6: Final answer
    x = 371,653.42

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1.5x scale

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.