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Finding the Fourth Proportional to 545,407.15, 818,108.49 and 166,326.77

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Solution

The fourth proportional to 545,407.15, 818,108.49 and 166,326.77 is: 249,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,407.15 : 818,108.49 = 166,326.77 : x
  2. Step 2: Convert to fraction form
    545,407.15/818,108.49 = 166,326.77/x
  3. Step 3: Cross multiply
    545,407.15x = 818,108.49 × 166,326.77
  4. Step 4: Simplify right side
    545,407.15x = 136,073,343,935.91
  5. Step 5: Solve for x
    x = 136,073,343,935.91/545,407.15
  6. Step 6: Final answer
    x = 249,489.48

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1.5x scale

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.