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Finding the Fourth Proportional to 376,812.13, 519,970.57 and 215,630.23

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Solution

The fourth proportional to 376,812.13, 519,970.57 and 215,630.23 is: 297,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,812.13 : 519,970.57 = 215,630.23 : x
  2. Step 2: Convert to fraction form
    376,812.13/519,970.57 = 215,630.23/x
  3. Step 3: Cross multiply
    376,812.13x = 519,970.57 × 215,630.23
  4. Step 4: Simplify right side
    376,812.13x = 112,121,373,602.33
  5. Step 5: Solve for x
    x = 112,121,373,602.33/376,812.13
  6. Step 6: Final answer
    x = 297,552.45

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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.