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Finding the Fourth Proportional to 400,390.11, 552,483.72 and 239,210.91

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Solution

The fourth proportional to 400,390.11, 552,483.72 and 239,210.91 is: 330,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,390.11 : 552,483.72 = 239,210.91 : x
  2. Step 2: Convert to fraction form
    400,390.11/552,483.72 = 239,210.91/x
  3. Step 3: Cross multiply
    400,390.11x = 552,483.72 × 239,210.91
  4. Step 4: Simplify right side
    400,390.11x = 132,160,133,421.39
  5. Step 5: Solve for x
    x = 132,160,133,421.39/400,390.11
  6. Step 6: Final answer
    x = 330,078.42

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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.