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Finding the Fourth Proportional to 400,803.31, 553,108.76 and 219,526.66

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Solution

The fourth proportional to 400,803.31, 553,108.76 and 219,526.66 is: 302,946.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,803.31 : 553,108.76 = 219,526.66 : x
  2. Step 2: Convert to fraction form
    400,803.31/553,108.76 = 219,526.66/x
  3. Step 3: Cross multiply
    400,803.31x = 553,108.76 × 219,526.66
  4. Step 4: Simplify right side
    400,803.31x = 121,422,118,699.54
  5. Step 5: Solve for x
    x = 121,422,118,699.54/400,803.31
  6. Step 6: Final answer
    x = 302,946.90

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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.