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Finding the Fourth Proportional to 610,870.20, 916,085.68 and 211,402.48

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Solution

The fourth proportional to 610,870.20, 916,085.68 and 211,402.48 is: 317,027.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,870.20 : 916,085.68 = 211,402.48 : x
  2. Step 2: Convert to fraction form
    610,870.20/916,085.68 = 211,402.48/x
  3. Step 3: Cross multiply
    610,870.20x = 916,085.68 × 211,402.48
  4. Step 4: Simplify right side
    610,870.20x = 193,662,784,644.49
  5. Step 5: Solve for x
    x = 193,662,784,644.49/610,870.20
  6. Step 6: Final answer
    x = 317,027.72

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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.