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Finding the Fourth Proportional to 606,932.80, 910,399.20 and 212,948.80

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Solution

The fourth proportional to 606,932.80, 910,399.20 and 212,948.80 is: 319,423.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,932.80 : 910,399.20 = 212,948.80 : x
  2. Step 2: Convert to fraction form
    606,932.80/910,399.20 = 212,948.80/x
  3. Step 3: Cross multiply
    606,932.80x = 910,399.20 × 212,948.80
  4. Step 4: Simplify right side
    606,932.80x = 193,868,417,160.96
  5. Step 5: Solve for x
    x = 193,868,417,160.96/606,932.80
  6. Step 6: Final answer
    x = 319,423.20

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1.5x scale

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.