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Finding the Fourth Proportional to 487,876.76, 673,237.28 and 270,070.64

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Solution

The fourth proportional to 487,876.76, 673,237.28 and 270,070.64 is: 372,679.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,876.76 : 673,237.28 = 270,070.64 : x
  2. Step 2: Convert to fraction form
    487,876.76/673,237.28 = 270,070.64/x
  3. Step 3: Cross multiply
    487,876.76x = 673,237.28 × 270,070.64
  4. Step 4: Simplify right side
    487,876.76x = 181,821,623,081.46
  5. Step 5: Solve for x
    x = 181,821,623,081.46/487,876.76
  6. Step 6: Final answer
    x = 372,679.41

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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.