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Finding the Fourth Proportional to 229,304.94, 316,423.47 and 128,683.50

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Solution

The fourth proportional to 229,304.94, 316,423.47 and 128,683.50 is: 177,573.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,304.94 : 316,423.47 = 128,683.50 : x
  2. Step 2: Convert to fraction form
    229,304.94/316,423.47 = 128,683.50/x
  3. Step 3: Cross multiply
    229,304.94x = 316,423.47 × 128,683.50
  4. Step 4: Simplify right side
    229,304.94x = 40,718,479,601.75
  5. Step 5: Solve for x
    x = 40,718,479,601.75/229,304.94
  6. Step 6: Final answer
    x = 177,573.49

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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.