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Finding the Fourth Proportional to 370,400.52, 555,219.39 and 145,669.86

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Solution

The fourth proportional to 370,400.52, 555,219.39 and 145,669.86 is: 218,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,400.52 : 555,219.39 = 145,669.86 : x
  2. Step 2: Convert to fraction form
    370,400.52/555,219.39 = 145,669.86/x
  3. Step 3: Cross multiply
    370,400.52x = 555,219.39 × 145,669.86
  4. Step 4: Simplify right side
    370,400.52x = 80,878,730,810.59
  5. Step 5: Solve for x
    x = 80,878,730,810.59/370,400.52
  6. Step 6: Final answer
    x = 218,354.80

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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.