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Finding the Fourth Proportional to 364,020.30, 546,030.45 and 287,912.70

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Solution

The fourth proportional to 364,020.30, 546,030.45 and 287,912.70 is: 431,869.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,020.30 : 546,030.45 = 287,912.70 : x
  2. Step 2: Convert to fraction form
    364,020.30/546,030.45 = 287,912.70/x
  3. Step 3: Cross multiply
    364,020.30x = 546,030.45 × 287,912.70
  4. Step 4: Simplify right side
    364,020.30x = 157,209,101,141.72
  5. Step 5: Solve for x
    x = 157,209,101,141.72/364,020.30
  6. Step 6: Final answer
    x = 431,869.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.