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Finding the Fourth Proportional to 380,562.68, 525,176.72 and 208,486.90

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Solution

The fourth proportional to 380,562.68, 525,176.72 and 208,486.90 is: 287,712.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,562.68 : 525,176.72 = 208,486.90 : x
  2. Step 2: Convert to fraction form
    380,562.68/525,176.72 = 208,486.90/x
  3. Step 3: Cross multiply
    380,562.68x = 525,176.72 × 208,486.90
  4. Step 4: Simplify right side
    380,562.68x = 109,492,466,304.97
  5. Step 5: Solve for x
    x = 109,492,466,304.97/380,562.68
  6. Step 6: Final answer
    x = 287,712.04

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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.