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Finding the Fourth Proportional to 462,640.72, 638,445.36 and 258,699.04

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Solution

The fourth proportional to 462,640.72, 638,445.36 and 258,699.04 is: 357,005.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,640.72 : 638,445.36 = 258,699.04 : x
  2. Step 2: Convert to fraction form
    462,640.72/638,445.36 = 258,699.04/x
  3. Step 3: Cross multiply
    462,640.72x = 638,445.36 × 258,699.04
  4. Step 4: Simplify right side
    462,640.72x = 165,165,201,724.45
  5. Step 5: Solve for x
    x = 165,165,201,724.45/462,640.72
  6. Step 6: Final answer
    x = 357,005.33

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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.