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Finding the Fourth Proportional to 671,657.40, 1,007,486.10 and 173,021.40

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Solution

The fourth proportional to 671,657.40, 1,007,486.10 and 173,021.40 is: 259,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,657.40 : 1,007,486.10 = 173,021.40 : x
  2. Step 2: Convert to fraction form
    671,657.40/1,007,486.10 = 173,021.40/x
  3. Step 3: Cross multiply
    671,657.40x = 1,007,486.10 × 173,021.40
  4. Step 4: Simplify right side
    671,657.40x = 174,316,655,502.54
  5. Step 5: Solve for x
    x = 174,316,655,502.54/671,657.40
  6. Step 6: Final answer
    x = 259,532.10

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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.