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Finding the Fourth Proportional to 487,486.08, 672,702.72 and 269,681.92

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Solution

The fourth proportional to 487,486.08, 672,702.72 and 269,681.92 is: 372,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,486.08 : 672,702.72 = 269,681.92 : x
  2. Step 2: Convert to fraction form
    487,486.08/672,702.72 = 269,681.92/x
  3. Step 3: Cross multiply
    487,486.08x = 672,702.72 × 269,681.92
  4. Step 4: Simplify right side
    487,486.08x = 181,415,761,118.82
  5. Step 5: Solve for x
    x = 181,415,761,118.82/487,486.08
  6. Step 6: Final answer
    x = 372,145.52

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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.