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Finding the Fourth Proportional to 274,885.74, 412,308.99 and 85,341.51

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Solution

The fourth proportional to 274,885.74, 412,308.99 and 85,341.51 is: 128,006.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,885.74 : 412,308.99 = 85,341.51 : x
  2. Step 2: Convert to fraction form
    274,885.74/412,308.99 = 85,341.51/x
  3. Step 3: Cross multiply
    274,885.74x = 412,308.99 × 85,341.51
  4. Step 4: Simplify right side
    274,885.74x = 35,187,071,793.17
  5. Step 5: Solve for x
    x = 35,187,071,793.17/274,885.74
  6. Step 6: Final answer
    x = 128,006.17

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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.