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Finding the Fourth Proportional to 487,762.56, 673,138.40 and 272,889.76

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Solution

The fourth proportional to 487,762.56, 673,138.40 and 272,889.76 is: 376,602.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,762.56 : 673,138.40 = 272,889.76 : x
  2. Step 2: Convert to fraction form
    487,762.56/673,138.40 = 272,889.76/x
  3. Step 3: Cross multiply
    487,762.56x = 673,138.40 × 272,889.76
  4. Step 4: Simplify right side
    487,762.56x = 183,692,576,422.78
  5. Step 5: Solve for x
    x = 183,692,576,422.78/487,762.56
  6. Step 6: Final answer
    x = 376,602.45

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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.