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Finding the Fourth Proportional to 261,338.73, 360,603.74 and 153,930.15

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Solution

The fourth proportional to 261,338.73, 360,603.74 and 153,930.15 is: 212,397.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,338.73 : 360,603.74 = 153,930.15 : x
  2. Step 2: Convert to fraction form
    261,338.73/360,603.74 = 153,930.15/x
  3. Step 3: Cross multiply
    261,338.73x = 360,603.74 × 153,930.15
  4. Step 4: Simplify right side
    261,338.73x = 55,507,787,019.11
  5. Step 5: Solve for x
    x = 55,507,787,019.11/261,338.73
  6. Step 6: Final answer
    x = 212,397.86

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1.5x scale

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.