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Finding the Fourth Proportional to 615,615.81, 849,308.49 and 357,448.68

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Solution

The fourth proportional to 615,615.81, 849,308.49 and 357,448.68 is: 493,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,615.81 : 849,308.49 = 357,448.68 : x
  2. Step 2: Convert to fraction form
    615,615.81/849,308.49 = 357,448.68/x
  3. Step 3: Cross multiply
    615,615.81x = 849,308.49 × 357,448.68
  4. Step 4: Simplify right side
    615,615.81x = 303,584,198,663.29
  5. Step 5: Solve for x
    x = 303,584,198,663.29/615,615.81
  6. Step 6: Final answer
    x = 493,139.05

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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.