Home / 229,308.08-316,450.68-128,715.44

Finding the Fourth Proportional to 229,308.08, 316,450.68 and 128,715.44

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Solution

The fourth proportional to 229,308.08, 316,450.68 and 128,715.44 is: 177,630.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,308.08 : 316,450.68 = 128,715.44 : x
  2. Step 2: Convert to fraction form
    229,308.08/316,450.68 = 128,715.44/x
  3. Step 3: Cross multiply
    229,308.08x = 316,450.68 × 128,715.44
  4. Step 4: Simplify right side
    229,308.08x = 40,732,088,514.50
  5. Step 5: Solve for x
    x = 40,732,088,514.50/229,308.08
  6. Step 6: Final answer
    x = 177,630.41

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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.