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Finding the Fourth Proportional to 308,300.05, 425,522.70 and 187,415.75

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Solution

The fourth proportional to 308,300.05, 425,522.70 and 187,415.75 is: 258,675.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,300.05 : 425,522.70 = 187,415.75 : x
  2. Step 2: Convert to fraction form
    308,300.05/425,522.70 = 187,415.75/x
  3. Step 3: Cross multiply
    308,300.05x = 425,522.70 × 187,415.75
  4. Step 4: Simplify right side
    308,300.05x = 79,749,655,962.53
  5. Step 5: Solve for x
    x = 79,749,655,962.53/308,300.05
  6. Step 6: Final answer
    x = 258,675.46

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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.