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Finding the Fourth Proportional to 380,874.60, 525,368.16 and 245,085.12

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Solution

The fourth proportional to 380,874.60, 525,368.16 and 245,085.12 is: 338,063.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,874.60 : 525,368.16 = 245,085.12 : x
  2. Step 2: Convert to fraction form
    380,874.60/525,368.16 = 245,085.12/x
  3. Step 3: Cross multiply
    380,874.60x = 525,368.16 × 245,085.12
  4. Step 4: Simplify right side
    380,874.60x = 128,759,918,537.78
  5. Step 5: Solve for x
    x = 128,759,918,537.78/380,874.60
  6. Step 6: Final answer
    x = 338,063.81

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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.