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Finding the Fourth Proportional to 487,108.26, 672,188.26 and 266,341.51

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Solution

The fourth proportional to 487,108.26, 672,188.26 and 266,341.51 is: 367,539.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,108.26 : 672,188.26 = 266,341.51 : x
  2. Step 2: Convert to fraction form
    487,108.26/672,188.26 = 266,341.51/x
  3. Step 3: Cross multiply
    487,108.26x = 672,188.26 × 266,341.51
  4. Step 4: Simplify right side
    487,108.26x = 179,031,636,172.67
  5. Step 5: Solve for x
    x = 179,031,636,172.67/487,108.26
  6. Step 6: Final answer
    x = 367,539.73

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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.