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Finding the Fourth Proportional to 545,269.80, 817,904.70 and 377,308.20

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Solution

The fourth proportional to 545,269.80, 817,904.70 and 377,308.20 is: 565,962.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,269.80 : 817,904.70 = 377,308.20 : x
  2. Step 2: Convert to fraction form
    545,269.80/817,904.70 = 377,308.20/x
  3. Step 3: Cross multiply
    545,269.80x = 817,904.70 × 377,308.20
  4. Step 4: Simplify right side
    545,269.80x = 308,602,150,128.54
  5. Step 5: Solve for x
    x = 308,602,150,128.54/545,269.80
  6. Step 6: Final answer
    x = 565,962.30

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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.