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Finding the Fourth Proportional to 608,754.40, 913,256.08 and 209,343.28

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Solution

The fourth proportional to 608,754.40, 913,256.08 and 209,343.28 is: 314,057.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,754.40 : 913,256.08 = 209,343.28 : x
  2. Step 2: Convert to fraction form
    608,754.40/913,256.08 = 209,343.28/x
  3. Step 3: Cross multiply
    608,754.40x = 913,256.08 × 209,343.28
  4. Step 4: Simplify right side
    608,754.40x = 191,184,023,267.14
  5. Step 5: Solve for x
    x = 191,184,023,267.14/608,754.40
  6. Step 6: Final answer
    x = 314,057.73

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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.