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Finding the Fourth Proportional to 389,610.40, 585,106.80 and 301,079.20

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Solution

The fourth proportional to 389,610.40, 585,106.80 and 301,079.20 is: 452,152.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,610.40 : 585,106.80 = 301,079.20 : x
  2. Step 2: Convert to fraction form
    389,610.40/585,106.80 = 301,079.20/x
  3. Step 3: Cross multiply
    389,610.40x = 585,106.80 × 301,079.20
  4. Step 4: Simplify right side
    389,610.40x = 176,163,487,258.56
  5. Step 5: Solve for x
    x = 176,163,487,258.56/389,610.40
  6. Step 6: Final answer
    x = 452,152.94

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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.