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Finding the Fourth Proportional to 292,300.76, 403,647.66 and 215,143.40

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Solution

The fourth proportional to 292,300.76, 403,647.66 and 215,143.40 is: 297,098.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,300.76 : 403,647.66 = 215,143.40 : x
  2. Step 2: Convert to fraction form
    292,300.76/403,647.66 = 215,143.40/x
  3. Step 3: Cross multiply
    292,300.76x = 403,647.66 × 215,143.40
  4. Step 4: Simplify right side
    292,300.76x = 86,842,129,974.44
  5. Step 5: Solve for x
    x = 86,842,129,974.44/292,300.76
  6. Step 6: Final answer
    x = 297,098.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.