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Finding the Fourth Proportional to 217,948.71, 300,903.40 and 172,809.03

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Solution

The fourth proportional to 217,948.71, 300,903.40 and 172,809.03 is: 238,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,948.71 : 300,903.40 = 172,809.03 : x
  2. Step 2: Convert to fraction form
    217,948.71/300,903.40 = 172,809.03/x
  3. Step 3: Cross multiply
    217,948.71x = 300,903.40 × 172,809.03
  4. Step 4: Simplify right side
    217,948.71x = 51,998,824,677.70
  5. Step 5: Solve for x
    x = 51,998,824,677.70/217,948.71
  6. Step 6: Final answer
    x = 238,582.85

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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.