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Finding the Fourth Proportional to 322,417.67, 445,391.72 and 258,312.60

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Solution

The fourth proportional to 322,417.67, 445,391.72 and 258,312.60 is: 356,836.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,417.67 : 445,391.72 = 258,312.60 : x
  2. Step 2: Convert to fraction form
    322,417.67/445,391.72 = 258,312.60/x
  3. Step 3: Cross multiply
    322,417.67x = 445,391.72 × 258,312.60
  4. Step 4: Simplify right side
    322,417.67x = 115,050,293,857.45
  5. Step 5: Solve for x
    x = 115,050,293,857.45/322,417.67
  6. Step 6: Final answer
    x = 356,836.19

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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.