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Finding the Fourth Proportional to 536,411.20, 805,070.40 and 221,094.40

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Solution

The fourth proportional to 536,411.20, 805,070.40 and 221,094.40 is: 331,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,411.20 : 805,070.40 = 221,094.40 : x
  2. Step 2: Convert to fraction form
    536,411.20/805,070.40 = 221,094.40/x
  3. Step 3: Cross multiply
    536,411.20x = 805,070.40 × 221,094.40
  4. Step 4: Simplify right side
    536,411.20x = 177,996,557,045.76
  5. Step 5: Solve for x
    x = 177,996,557,045.76/536,411.20
  6. Step 6: Final answer
    x = 331,828.56

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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.