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Finding the Fourth Proportional to 261,531, 392,296.48 and 74,537.64

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Solution

The fourth proportional to 261,531, 392,296.48 and 74,537.64 is: 111,806.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,531 : 392,296.48 = 74,537.64 : x
  2. Step 2: Convert to fraction form
    261,531/392,296.48 = 74,537.64/x
  3. Step 3: Cross multiply
    261,531x = 392,296.48 × 74,537.64
  4. Step 4: Simplify right side
    261,531x = 29,240,853,799.51
  5. Step 5: Solve for x
    x = 29,240,853,799.51/261,531
  6. Step 6: Final answer
    x = 111,806.45

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1.5x scale

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.