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Finding the Fourth Proportional to 613,577.28, 920,415.15 and 214,209.21

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Solution

The fourth proportional to 613,577.28, 920,415.15 and 214,209.21 is: 321,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,577.28 : 920,415.15 = 214,209.21 : x
  2. Step 2: Convert to fraction form
    613,577.28/920,415.15 = 214,209.21/x
  3. Step 3: Cross multiply
    613,577.28x = 920,415.15 × 214,209.21
  4. Step 4: Simplify right side
    613,577.28x = 197,161,402,153.53
  5. Step 5: Solve for x
    x = 197,161,402,153.53/613,577.28
  6. Step 6: Final answer
    x = 321,331.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.