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Finding the Fourth Proportional to 572,069.40, 857,715.30 and 217,030.20

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Solution

The fourth proportional to 572,069.40, 857,715.30 and 217,030.20 is: 325,397.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,069.40 : 857,715.30 = 217,030.20 : x
  2. Step 2: Convert to fraction form
    572,069.40/857,715.30 = 217,030.20/x
  3. Step 3: Cross multiply
    572,069.40x = 857,715.30 × 217,030.20
  4. Step 4: Simplify right side
    572,069.40x = 186,150,123,102.06
  5. Step 5: Solve for x
    x = 186,150,123,102.06/572,069.40
  6. Step 6: Final answer
    x = 325,397.80

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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.