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Finding the Fourth Proportional to 423,004.01, 634,672.16 and 186,180.66

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Solution

The fourth proportional to 423,004.01, 634,672.16 and 186,180.66 is: 279,344.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,004.01 : 634,672.16 = 186,180.66 : x
  2. Step 2: Convert to fraction form
    423,004.01/634,672.16 = 186,180.66/x
  3. Step 3: Cross multiply
    423,004.01x = 634,672.16 × 186,180.66
  4. Step 4: Simplify right side
    423,004.01x = 118,163,680,701.52
  5. Step 5: Solve for x
    x = 118,163,680,701.52/423,004.01
  6. Step 6: Final answer
    x = 279,344.12

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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.