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Finding the Fourth Proportional to 422,640.18, 583,303.22 and 261,547.11

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Solution

The fourth proportional to 422,640.18, 583,303.22 and 261,547.11 is: 360,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,640.18 : 583,303.22 = 261,547.11 : x
  2. Step 2: Convert to fraction form
    422,640.18/583,303.22 = 261,547.11/x
  3. Step 3: Cross multiply
    422,640.18x = 583,303.22 × 261,547.11
  4. Step 4: Simplify right side
    422,640.18x = 152,561,270,136.96
  5. Step 5: Solve for x
    x = 152,561,270,136.96/422,640.18
  6. Step 6: Final answer
    x = 360,972.00

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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.