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Finding the Fourth Proportional to 380,521.79, 525,123.92 and 229,589.63

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Solution

The fourth proportional to 380,521.79, 525,123.92 and 229,589.63 is: 316,836.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,521.79 : 525,123.92 = 229,589.63 : x
  2. Step 2: Convert to fraction form
    380,521.79/525,123.92 = 229,589.63/x
  3. Step 3: Cross multiply
    380,521.79x = 525,123.92 × 229,589.63
  4. Step 4: Simplify right side
    380,521.79x = 120,563,004,445.30
  5. Step 5: Solve for x
    x = 120,563,004,445.30/380,521.79
  6. Step 6: Final answer
    x = 316,836.01

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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.