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Finding the Fourth Proportional to 520,042.40, 779,833.20 and 239,645.60

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Solution

The fourth proportional to 520,042.40, 779,833.20 and 239,645.60 is: 359,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,042.40 : 779,833.20 = 239,645.60 : x
  2. Step 2: Convert to fraction form
    520,042.40/779,833.20 = 239,645.60/x
  3. Step 3: Cross multiply
    520,042.40x = 779,833.20 × 239,645.60
  4. Step 4: Simplify right side
    520,042.40x = 186,883,595,113.92
  5. Step 5: Solve for x
    x = 186,883,595,113.92/520,042.40
  6. Step 6: Final answer
    x = 359,362.23

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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.