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Finding the Fourth Proportional to 417,920.50, 576,730.32 and 239,072.50

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Solution

The fourth proportional to 417,920.50, 576,730.32 and 239,072.50 is: 329,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,920.50 : 576,730.32 = 239,072.50 : x
  2. Step 2: Convert to fraction form
    417,920.50/576,730.32 = 239,072.50/x
  3. Step 3: Cross multiply
    417,920.50x = 576,730.32 × 239,072.50
  4. Step 4: Simplify right side
    417,920.50x = 137,880,359,428.20
  5. Step 5: Solve for x
    x = 137,880,359,428.20/417,920.50
  6. Step 6: Final answer
    x = 329,920.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.