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Finding the Fourth Proportional to 400,521.69, 552,719.52 and 219,232.01

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Solution

The fourth proportional to 400,521.69, 552,719.52 and 219,232.01 is: 302,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,521.69 : 552,719.52 = 219,232.01 : x
  2. Step 2: Convert to fraction form
    400,521.69/552,719.52 = 219,232.01/x
  3. Step 3: Cross multiply
    400,521.69x = 552,719.52 × 219,232.01
  4. Step 4: Simplify right side
    400,521.69x = 121,173,808,572.24
  5. Step 5: Solve for x
    x = 121,173,808,572.24/400,521.69
  6. Step 6: Final answer
    x = 302,539.94

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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.