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Finding the Fourth Proportional to 615,357.28, 849,192.96 and 339,715.12

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Solution

The fourth proportional to 615,357.28, 849,192.96 and 339,715.12 is: 468,806.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,357.28 : 849,192.96 = 339,715.12 : x
  2. Step 2: Convert to fraction form
    615,357.28/849,192.96 = 339,715.12/x
  3. Step 3: Cross multiply
    615,357.28x = 849,192.96 × 339,715.12
  4. Step 4: Simplify right side
    615,357.28x = 288,483,688,309.56
  5. Step 5: Solve for x
    x = 288,483,688,309.56/615,357.28
  6. Step 6: Final answer
    x = 468,806.82

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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.