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Finding the Fourth Proportional to 272,466.80, 409,007.40 and 210,412.40

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Solution

The fourth proportional to 272,466.80, 409,007.40 and 210,412.40 is: 315,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,466.80 : 409,007.40 = 210,412.40 : x
  2. Step 2: Convert to fraction form
    272,466.80/409,007.40 = 210,412.40/x
  3. Step 3: Cross multiply
    272,466.80x = 409,007.40 × 210,412.40
  4. Step 4: Simplify right side
    272,466.80x = 86,060,228,651.76
  5. Step 5: Solve for x
    x = 86,060,228,651.76/272,466.80
  6. Step 6: Final answer
    x = 315,855.84

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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.