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Finding the Fourth Proportional to 287,782.20, 432,062.10 and 182,806.20

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Solution

The fourth proportional to 287,782.20, 432,062.10 and 182,806.20 is: 274,456.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,782.20 : 432,062.10 = 182,806.20 : x
  2. Step 2: Convert to fraction form
    287,782.20/432,062.10 = 182,806.20/x
  3. Step 3: Cross multiply
    287,782.20x = 432,062.10 × 182,806.20
  4. Step 4: Simplify right side
    287,782.20x = 78,983,630,665.02
  5. Step 5: Solve for x
    x = 78,983,630,665.02/287,782.20
  6. Step 6: Final answer
    x = 274,456.28

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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.