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Finding the Fourth Proportional to 389,460.40, 537,329.40 and 217,350.40

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Solution

The fourth proportional to 389,460.40, 537,329.40 and 217,350.40 is: 299,873.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,460.40 : 537,329.40 = 217,350.40 : x
  2. Step 2: Convert to fraction form
    389,460.40/537,329.40 = 217,350.40/x
  3. Step 3: Cross multiply
    389,460.40x = 537,329.40 × 217,350.40
  4. Step 4: Simplify right side
    389,460.40x = 116,788,760,021.76
  5. Step 5: Solve for x
    x = 116,788,760,021.76/389,460.40
  6. Step 6: Final answer
    x = 299,873.26

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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.