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Finding the Fourth Proportional to 535,903.10, 804,012.54 and 215,890.28

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Solution

The fourth proportional to 535,903.10, 804,012.54 and 215,890.28 is: 323,899.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,903.10 : 804,012.54 = 215,890.28 : x
  2. Step 2: Convert to fraction form
    535,903.10/804,012.54 = 215,890.28/x
  3. Step 3: Cross multiply
    535,903.10x = 804,012.54 × 215,890.28
  4. Step 4: Simplify right side
    535,903.10x = 173,578,492,384.11
  5. Step 5: Solve for x
    x = 173,578,492,384.11/535,903.10
  6. Step 6: Final answer
    x = 323,899.03

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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.