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Finding the Fourth Proportional to 554,461.92, 765,166.28 and 312,749.31

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Solution

The fourth proportional to 554,461.92, 765,166.28 and 312,749.31 is: 431,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,461.92 : 765,166.28 = 312,749.31 : x
  2. Step 2: Convert to fraction form
    554,461.92/765,166.28 = 312,749.31/x
  3. Step 3: Cross multiply
    554,461.92x = 765,166.28 × 312,749.31
  4. Step 4: Simplify right side
    554,461.92x = 239,305,224,541.52
  5. Step 5: Solve for x
    x = 239,305,224,541.52/554,461.92
  6. Step 6: Final answer
    x = 431,599.03

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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.