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Finding the Fourth Proportional to 608,719.67, 913,070.24 and 209,363.90

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Solution

The fourth proportional to 608,719.67, 913,070.24 and 209,363.90 is: 314,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,719.67 : 913,070.24 = 209,363.90 : x
  2. Step 2: Convert to fraction form
    608,719.67/913,070.24 = 209,363.90/x
  3. Step 3: Cross multiply
    608,719.67x = 913,070.24 × 209,363.90
  4. Step 4: Simplify right side
    608,719.67x = 191,163,946,420.34
  5. Step 5: Solve for x
    x = 191,163,946,420.34/608,719.67
  6. Step 6: Final answer
    x = 314,042.66

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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.