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Finding the Fourth Proportional to 380,559.67, 525,172.57 and 208,483.89

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Solution

The fourth proportional to 380,559.67, 525,172.57 and 208,483.89 is: 287,707.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,559.67 : 525,172.57 = 208,483.89 : x
  2. Step 2: Convert to fraction form
    380,559.67/525,172.57 = 208,483.89/x
  3. Step 3: Cross multiply
    380,559.67x = 525,172.57 × 208,483.89
  4. Step 4: Simplify right side
    380,559.67x = 109,490,017,824.29
  5. Step 5: Solve for x
    x = 109,490,017,824.29/380,559.67
  6. Step 6: Final answer
    x = 287,707.89

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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.