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Finding the Fourth Proportional to 400,501.50, 552,693.69 and 221,653.50

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Solution

The fourth proportional to 400,501.50, 552,693.69 and 221,653.50 is: 305,882.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,501.50 : 552,693.69 = 221,653.50 : x
  2. Step 2: Convert to fraction form
    400,501.50/552,693.69 = 221,653.50/x
  3. Step 3: Cross multiply
    400,501.50x = 552,693.69 × 221,653.50
  4. Step 4: Simplify right side
    400,501.50x = 122,506,490,816.42
  5. Step 5: Solve for x
    x = 122,506,490,816.42/400,501.50
  6. Step 6: Final answer
    x = 305,882.73

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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.