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Finding the Fourth Proportional to 370,429.80, 555,644.70 and 354,877.80

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Solution

The fourth proportional to 370,429.80, 555,644.70 and 354,877.80 is: 532,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,429.80 : 555,644.70 = 354,877.80 : x
  2. Step 2: Convert to fraction form
    370,429.80/555,644.70 = 354,877.80/x
  3. Step 3: Cross multiply
    370,429.80x = 555,644.70 × 354,877.80
  4. Step 4: Simplify right side
    370,429.80x = 197,185,968,717.66
  5. Step 5: Solve for x
    x = 197,185,968,717.66/370,429.80
  6. Step 6: Final answer
    x = 532,316.70

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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.