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Finding the Fourth Proportional to 212,508.51, 318,711.72 and 62,708.34

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Solution

The fourth proportional to 212,508.51, 318,711.72 and 62,708.34 is: 94,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,508.51 : 318,711.72 = 62,708.34 : x
  2. Step 2: Convert to fraction form
    212,508.51/318,711.72 = 62,708.34/x
  3. Step 3: Cross multiply
    212,508.51x = 318,711.72 × 62,708.34
  4. Step 4: Simplify right side
    212,508.51x = 19,985,882,899.74
  5. Step 5: Solve for x
    x = 19,985,882,899.74/212,508.51
  6. Step 6: Final answer
    x = 94,047.45

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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.