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Finding the Fourth Proportional to 292,298.76, 403,644.90 and 215,141.40

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Solution

The fourth proportional to 292,298.76, 403,644.90 and 215,141.40 is: 297,095.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,298.76 : 403,644.90 = 215,141.40 : x
  2. Step 2: Convert to fraction form
    292,298.76/403,644.90 = 215,141.40/x
  3. Step 3: Cross multiply
    292,298.76x = 403,644.90 × 215,141.40
  4. Step 4: Simplify right side
    292,298.76x = 86,840,728,888.86
  5. Step 5: Solve for x
    x = 86,840,728,888.86/292,298.76
  6. Step 6: Final answer
    x = 297,095.78

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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.