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Finding the Fourth Proportional to 325,935.60, 490,215.60 and 291,818.40

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Solution

The fourth proportional to 325,935.60, 490,215.60 and 291,818.40 is: 438,902.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,935.60 : 490,215.60 = 291,818.40 : x
  2. Step 2: Convert to fraction form
    325,935.60/490,215.60 = 291,818.40/x
  3. Step 3: Cross multiply
    325,935.60x = 490,215.60 × 291,818.40
  4. Step 4: Simplify right side
    325,935.60x = 143,053,932,047.04
  5. Step 5: Solve for x
    x = 143,053,932,047.04/325,935.60
  6. Step 6: Final answer
    x = 438,902.45

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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.