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Finding the Fourth Proportional to 559,859.45, 772,602.10 and 305,212.46

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Solution

The fourth proportional to 559,859.45, 772,602.10 and 305,212.46 is: 421,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,859.45 : 772,602.10 = 305,212.46 : x
  2. Step 2: Convert to fraction form
    559,859.45/772,602.10 = 305,212.46/x
  3. Step 3: Cross multiply
    559,859.45x = 772,602.10 × 305,212.46
  4. Step 4: Simplify right side
    559,859.45x = 235,807,782,916.12
  5. Step 5: Solve for x
    x = 235,807,782,916.12/559,859.45
  6. Step 6: Final answer
    x = 421,191.04

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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.