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Finding the Fourth Proportional to 380,885.82, 525,603.51 and 211,118.46

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Solution

The fourth proportional to 380,885.82, 525,603.51 and 211,118.46 is: 291,332.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,885.82 : 525,603.51 = 211,118.46 : x
  2. Step 2: Convert to fraction form
    380,885.82/525,603.51 = 211,118.46/x
  3. Step 3: Cross multiply
    380,885.82x = 525,603.51 × 211,118.46
  4. Step 4: Simplify right side
    380,885.82x = 110,964,603,601.80
  5. Step 5: Solve for x
    x = 110,964,603,601.80/380,885.82
  6. Step 6: Final answer
    x = 291,332.99

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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.