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Finding the Fourth Proportional to 212,407.74, 318,808.71 and 107,300.52

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Solution

The fourth proportional to 212,407.74, 318,808.71 and 107,300.52 is: 161,050.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,407.74 : 318,808.71 = 107,300.52 : x
  2. Step 2: Convert to fraction form
    212,407.74/318,808.71 = 107,300.52/x
  3. Step 3: Cross multiply
    212,407.74x = 318,808.71 × 107,300.52
  4. Step 4: Simplify right side
    212,407.74x = 34,208,340,363.53
  5. Step 5: Solve for x
    x = 34,208,340,363.53/212,407.74
  6. Step 6: Final answer
    x = 161,050.35

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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.