Home / 280,359.45-386,895.93-153,035.04

Finding the Fourth Proportional to 280,359.45, 386,895.93 and 153,035.04

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Solution

The fourth proportional to 280,359.45, 386,895.93 and 153,035.04 is: 211,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,359.45 : 386,895.93 = 153,035.04 : x
  2. Step 2: Convert to fraction form
    280,359.45/386,895.93 = 153,035.04/x
  3. Step 3: Cross multiply
    280,359.45x = 386,895.93 × 153,035.04
  4. Step 4: Simplify right side
    280,359.45x = 59,208,634,123.39
  5. Step 5: Solve for x
    x = 59,208,634,123.39/280,359.45
  6. Step 6: Final answer
    x = 211,188.29

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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.