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Finding the Fourth Proportional to 608,719.86, 912,886.20 and 209,264.58

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Solution

The fourth proportional to 608,719.86, 912,886.20 and 209,264.58 is: 313,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,719.86 : 912,886.20 = 209,264.58 : x
  2. Step 2: Convert to fraction form
    608,719.86/912,886.20 = 209,264.58/x
  3. Step 3: Cross multiply
    608,719.86x = 912,886.20 × 209,264.58
  4. Step 4: Simplify right side
    608,719.86x = 191,034,747,230.80
  5. Step 5: Solve for x
    x = 191,034,747,230.80/608,719.86
  6. Step 6: Final answer
    x = 313,830.32

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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.