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Finding the Fourth Proportional to 212,674.40, 318,830.40 and 94,281.20

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Solution

The fourth proportional to 212,674.40, 318,830.40 and 94,281.20 is: 141,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,674.40 : 318,830.40 = 94,281.20 : x
  2. Step 2: Convert to fraction form
    212,674.40/318,830.40 = 94,281.20/x
  3. Step 3: Cross multiply
    212,674.40x = 318,830.40 × 94,281.20
  4. Step 4: Simplify right side
    212,674.40x = 30,059,712,708.48
  5. Step 5: Solve for x
    x = 30,059,712,708.48/212,674.40
  6. Step 6: Final answer
    x = 141,341.47

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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.