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Finding the Fourth Proportional to 472,110.30, 708,165.45 and 219,390.30

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Solution

The fourth proportional to 472,110.30, 708,165.45 and 219,390.30 is: 329,085.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,110.30 : 708,165.45 = 219,390.30 : x
  2. Step 2: Convert to fraction form
    472,110.30/708,165.45 = 219,390.30/x
  3. Step 3: Cross multiply
    472,110.30x = 708,165.45 × 219,390.30
  4. Step 4: Simplify right side
    472,110.30x = 155,364,630,525.14
  5. Step 5: Solve for x
    x = 155,364,630,525.14/472,110.30
  6. Step 6: Final answer
    x = 329,085.45

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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.