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Finding the Fourth Proportional to 485,045.40, 669,374.34 and 270,188.88

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Solution

The fourth proportional to 485,045.40, 669,374.34 and 270,188.88 is: 372,867.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,045.40 : 669,374.34 = 270,188.88 : x
  2. Step 2: Convert to fraction form
    485,045.40/669,374.34 = 270,188.88/x
  3. Step 3: Cross multiply
    485,045.40x = 669,374.34 × 270,188.88
  4. Step 4: Simplify right side
    485,045.40x = 180,857,503,225.34
  5. Step 5: Solve for x
    x = 180,857,503,225.34/485,045.40
  6. Step 6: Final answer
    x = 372,867.17

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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.