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Finding the Fourth Proportional to 248,339.31, 372,564.50 and 90,567.77

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Solution

The fourth proportional to 248,339.31, 372,564.50 and 90,567.77 is: 135,871.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,339.31 : 372,564.50 = 90,567.77 : x
  2. Step 2: Convert to fraction form
    248,339.31/372,564.50 = 90,567.77/x
  3. Step 3: Cross multiply
    248,339.31x = 372,564.50 × 90,567.77
  4. Step 4: Simplify right side
    248,339.31x = 33,742,335,946.17
  5. Step 5: Solve for x
    x = 33,742,335,946.17/248,339.31
  6. Step 6: Final answer
    x = 135,871.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.