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Finding the Fourth Proportional to 326,345.64, 489,658.80 and 176,692.88

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Solution

The fourth proportional to 326,345.64, 489,658.80 and 176,692.88 is: 265,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,345.64 : 489,658.80 = 176,692.88 : x
  2. Step 2: Convert to fraction form
    326,345.64/489,658.80 = 176,692.88/x
  3. Step 3: Cross multiply
    326,345.64x = 489,658.80 × 176,692.88
  4. Step 4: Simplify right side
    326,345.64x = 86,519,221,141.05
  5. Step 5: Solve for x
    x = 86,519,221,141.05/326,345.64
  6. Step 6: Final answer
    x = 265,115.30

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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.