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Finding the Fourth Proportional to 400,395.42, 552,541.55 and 228,341.40

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Solution

The fourth proportional to 400,395.42, 552,541.55 and 228,341.40 is: 315,108.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,395.42 : 552,541.55 = 228,341.40 : x
  2. Step 2: Convert to fraction form
    400,395.42/552,541.55 = 228,341.40/x
  3. Step 3: Cross multiply
    400,395.42x = 552,541.55 × 228,341.40
  4. Step 4: Simplify right side
    400,395.42x = 126,168,109,155.85
  5. Step 5: Solve for x
    x = 126,168,109,155.85/400,395.42
  6. Step 6: Final answer
    x = 315,108.77

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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.