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Finding the Fourth Proportional to 229,063.38, 316,106.37 and 128,461.38

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Solution

The fourth proportional to 229,063.38, 316,106.37 and 128,461.38 is: 177,276.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,063.38 : 316,106.37 = 128,461.38 : x
  2. Step 2: Convert to fraction form
    229,063.38/316,106.37 = 128,461.38/x
  3. Step 3: Cross multiply
    229,063.38x = 316,106.37 × 128,461.38
  4. Step 4: Simplify right side
    229,063.38x = 40,607,460,516.99
  5. Step 5: Solve for x
    x = 40,607,460,516.99/229,063.38
  6. Step 6: Final answer
    x = 177,276.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.