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Finding the Fourth Proportional to 415,069.10, 622,603.65 and 310,093.10

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Solution

The fourth proportional to 415,069.10, 622,603.65 and 310,093.10 is: 465,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,069.10 : 622,603.65 = 310,093.10 : x
  2. Step 2: Convert to fraction form
    415,069.10/622,603.65 = 310,093.10/x
  3. Step 3: Cross multiply
    415,069.10x = 622,603.65 × 310,093.10
  4. Step 4: Simplify right side
    415,069.10x = 193,065,095,899.82
  5. Step 5: Solve for x
    x = 193,065,095,899.82/415,069.10
  6. Step 6: Final answer
    x = 465,139.65

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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.