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Finding the Fourth Proportional to 315,713.02, 435,690.39 and 172,482.34

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Solution

The fourth proportional to 315,713.02, 435,690.39 and 172,482.34 is: 238,029.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,713.02 : 435,690.39 = 172,482.34 : x
  2. Step 2: Convert to fraction form
    315,713.02/435,690.39 = 172,482.34/x
  3. Step 3: Cross multiply
    315,713.02x = 435,690.39 × 172,482.34
  4. Step 4: Simplify right side
    315,713.02x = 75,148,897,982.71
  5. Step 5: Solve for x
    x = 75,148,897,982.71/315,713.02
  6. Step 6: Final answer
    x = 238,029.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.