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Finding the Fourth Proportional to 472,021.20, 708,031.80 and 304,059.60

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Solution

The fourth proportional to 472,021.20, 708,031.80 and 304,059.60 is: 456,089.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,021.20 : 708,031.80 = 304,059.60 : x
  2. Step 2: Convert to fraction form
    472,021.20/708,031.80 = 304,059.60/x
  3. Step 3: Cross multiply
    472,021.20x = 708,031.80 × 304,059.60
  4. Step 4: Simplify right side
    472,021.20x = 215,283,865,895.28
  5. Step 5: Solve for x
    x = 215,283,865,895.28/472,021.20
  6. Step 6: Final answer
    x = 456,089.40

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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.