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Finding the Fourth Proportional to 231,590, 319,594.20 and 130,985.84

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Solution

The fourth proportional to 231,590, 319,594.20 and 130,985.84 is: 180,760.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,590 : 319,594.20 = 130,985.84 : x
  2. Step 2: Convert to fraction form
    231,590/319,594.20 = 130,985.84/x
  3. Step 3: Cross multiply
    231,590x = 319,594.20 × 130,985.84
  4. Step 4: Simplify right side
    231,590x = 41,862,314,746.13
  5. Step 5: Solve for x
    x = 41,862,314,746.13/231,590
  6. Step 6: Final answer
    x = 180,760.46

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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.