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Finding the Fourth Proportional to 490,681.80, 736,022.70 and 210,227.40

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Solution

The fourth proportional to 490,681.80, 736,022.70 and 210,227.40 is: 315,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,681.80 : 736,022.70 = 210,227.40 : x
  2. Step 2: Convert to fraction form
    490,681.80/736,022.70 = 210,227.40/x
  3. Step 3: Cross multiply
    490,681.80x = 736,022.70 × 210,227.40
  4. Step 4: Simplify right side
    490,681.80x = 154,732,138,561.98
  5. Step 5: Solve for x
    x = 154,732,138,561.98/490,681.80
  6. Step 6: Final answer
    x = 315,341.10

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Similar ratio
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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.