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Finding the Fourth Proportional to 615,547.40, 923,090.70 and 216,033.80

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Solution

The fourth proportional to 615,547.40, 923,090.70 and 216,033.80 is: 323,969.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,547.40 : 923,090.70 = 216,033.80 : x
  2. Step 2: Convert to fraction form
    615,547.40/923,090.70 = 216,033.80/x
  3. Step 3: Cross multiply
    615,547.40x = 923,090.70 × 216,033.80
  4. Step 4: Simplify right side
    615,547.40x = 199,418,791,665.66
  5. Step 5: Solve for x
    x = 199,418,791,665.66/615,547.40
  6. Step 6: Final answer
    x = 323,969.84

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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.