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Finding the Fourth Proportional to 462,950.40, 638,868.48 and 261,747.20

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Solution

The fourth proportional to 462,950.40, 638,868.48 and 261,747.20 is: 361,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,950.40 : 638,868.48 = 261,747.20 : x
  2. Step 2: Convert to fraction form
    462,950.40/638,868.48 = 261,747.20/x
  3. Step 3: Cross multiply
    462,950.40x = 638,868.48 × 261,747.20
  4. Step 4: Simplify right side
    462,950.40x = 167,222,035,808.26
  5. Step 5: Solve for x
    x = 167,222,035,808.26/462,950.40
  6. Step 6: Final answer
    x = 361,209.40

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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.