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Finding the Fourth Proportional to 415,019.10, 622,528.65 and 310,043.10

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Solution

The fourth proportional to 415,019.10, 622,528.65 and 310,043.10 is: 465,064.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,019.10 : 622,528.65 = 310,043.10 : x
  2. Step 2: Convert to fraction form
    415,019.10/622,528.65 = 310,043.10/x
  3. Step 3: Cross multiply
    415,019.10x = 622,528.65 × 310,043.10
  4. Step 4: Simplify right side
    415,019.10x = 193,010,712,484.82
  5. Step 5: Solve for x
    x = 193,010,712,484.82/415,019.10
  6. Step 6: Final answer
    x = 465,064.65

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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.