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Finding the Fourth Proportional to 221,225.40, 331,838.10 and 63,439.80

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Solution

The fourth proportional to 221,225.40, 331,838.10 and 63,439.80 is: 95,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,225.40 : 331,838.10 = 63,439.80 : x
  2. Step 2: Convert to fraction form
    221,225.40/331,838.10 = 63,439.80/x
  3. Step 3: Cross multiply
    221,225.40x = 331,838.10 × 63,439.80
  4. Step 4: Simplify right side
    221,225.40x = 21,051,742,696.38
  5. Step 5: Solve for x
    x = 21,051,742,696.38/221,225.40
  6. Step 6: Final answer
    x = 95,159.70

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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.