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Finding the Fourth Proportional to 229,208.77, 316,313.28 and 128,606.77

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Solution

The fourth proportional to 229,208.77, 316,313.28 and 128,606.77 is: 177,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,208.77 : 316,313.28 = 128,606.77 : x
  2. Step 2: Convert to fraction form
    229,208.77/316,313.28 = 128,606.77/x
  3. Step 3: Cross multiply
    229,208.77x = 316,313.28 × 128,606.77
  4. Step 4: Simplify right side
    229,208.77x = 40,680,029,248.91
  5. Step 5: Solve for x
    x = 40,680,029,248.91/229,208.77
  6. Step 6: Final answer
    x = 177,480.25

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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.