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Finding the Fourth Proportional to 212,587.96, 318,663.18 and 94,315

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Solution

The fourth proportional to 212,587.96, 318,663.18 and 94,315 is: 141,375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,587.96 : 318,663.18 = 94,315 : x
  2. Step 2: Convert to fraction form
    212,587.96/318,663.18 = 94,315/x
  3. Step 3: Cross multiply
    212,587.96x = 318,663.18 × 94,315
  4. Step 4: Simplify right side
    212,587.96x = 30,054,717,821.70
  5. Step 5: Solve for x
    x = 30,054,717,821.70/212,587.96
  6. Step 6: Final answer
    x = 141,375.45

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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.