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Finding the Fourth Proportional to 261,135.88, 360,340.38 and 153,699.51

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Solution

The fourth proportional to 261,135.88, 360,340.38 and 153,699.51 is: 212,089.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,135.88 : 360,340.38 = 153,699.51 : x
  2. Step 2: Convert to fraction form
    261,135.88/360,340.38 = 153,699.51/x
  3. Step 3: Cross multiply
    261,135.88x = 360,340.38 × 153,699.51
  4. Step 4: Simplify right side
    261,135.88x = 55,384,139,839.21
  5. Step 5: Solve for x
    x = 55,384,139,839.21/261,135.88
  6. Step 6: Final answer
    x = 212,089.35

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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.