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Finding the Fourth Proportional to 453,484.95, 679,583.55 and 213,508.17

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Solution

The fourth proportional to 453,484.95, 679,583.55 and 213,508.17 is: 319,959.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,484.95 : 679,583.55 = 213,508.17 : x
  2. Step 2: Convert to fraction form
    453,484.95/679,583.55 = 213,508.17/x
  3. Step 3: Cross multiply
    453,484.95x = 679,583.55 × 213,508.17
  4. Step 4: Simplify right side
    453,484.95x = 145,096,640,122.60
  5. Step 5: Solve for x
    x = 145,096,640,122.60/453,484.95
  6. Step 6: Final answer
    x = 319,959.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.