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Finding the Fourth Proportional to 572,181.80, 858,272.70 and 320,239.40

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Solution

The fourth proportional to 572,181.80, 858,272.70 and 320,239.40 is: 480,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,181.80 : 858,272.70 = 320,239.40 : x
  2. Step 2: Convert to fraction form
    572,181.80/858,272.70 = 320,239.40/x
  3. Step 3: Cross multiply
    572,181.80x = 858,272.70 × 320,239.40
  4. Step 4: Simplify right side
    572,181.80x = 274,852,734,484.38
  5. Step 5: Solve for x
    x = 274,852,734,484.38/572,181.80
  6. Step 6: Final answer
    x = 480,359.10

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Double scale
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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.