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Finding the Fourth Proportional to 985,290, 1,478,149.38 and 302,177.22

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Solution

The fourth proportional to 985,290, 1,478,149.38 and 302,177.22 is: 453,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,290 : 1,478,149.38 = 302,177.22 : x
  2. Step 2: Convert to fraction form
    985,290/1,478,149.38 = 302,177.22/x
  3. Step 3: Cross multiply
    985,290x = 1,478,149.38 × 302,177.22
  4. Step 4: Simplify right side
    985,290x = 446,663,070,393.12
  5. Step 5: Solve for x
    x = 446,663,070,393.12/985,290
  6. Step 6: Final answer
    x = 453,331.58

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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.