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Finding the Fourth Proportional to 491,472.49, 736,585.34 and 221,312.38

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Solution

The fourth proportional to 491,472.49, 736,585.34 and 221,312.38 is: 331,687.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,472.49 : 736,585.34 = 221,312.38 : x
  2. Step 2: Convert to fraction form
    491,472.49/736,585.34 = 221,312.38/x
  3. Step 3: Cross multiply
    491,472.49x = 736,585.34 × 221,312.38
  4. Step 4: Simplify right side
    491,472.49x = 163,015,454,668.51
  5. Step 5: Solve for x
    x = 163,015,454,668.51/491,472.49
  6. Step 6: Final answer
    x = 331,687.85

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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.