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Finding the Fourth Proportional to 400,315.78, 552,430.85 and 219,025.10

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Solution

The fourth proportional to 400,315.78, 552,430.85 and 219,025.10 is: 302,251.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,315.78 : 552,430.85 = 219,025.10 : x
  2. Step 2: Convert to fraction form
    400,315.78/552,430.85 = 219,025.10/x
  3. Step 3: Cross multiply
    400,315.78x = 552,430.85 × 219,025.10
  4. Step 4: Simplify right side
    400,315.78x = 120,996,219,402.18
  5. Step 5: Solve for x
    x = 120,996,219,402.18/400,315.78
  6. Step 6: Final answer
    x = 302,251.94

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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.