Home / 280,368.18-386,905.44-172,895.22

Finding the Fourth Proportional to 280,368.18, 386,905.44 and 172,895.22

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Solution

The fourth proportional to 280,368.18, 386,905.44 and 172,895.22 is: 238,593.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,368.18 : 386,905.44 = 172,895.22 : x
  2. Step 2: Convert to fraction form
    280,368.18/386,905.44 = 172,895.22/x
  3. Step 3: Cross multiply
    280,368.18x = 386,905.44 × 172,895.22
  4. Step 4: Simplify right side
    280,368.18x = 66,894,101,168.00
  5. Step 5: Solve for x
    x = 66,894,101,168.00/280,368.18
  6. Step 6: Final answer
    x = 238,593.77

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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.