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Finding the Fourth Proportional to 615,505.12, 849,538.80 and 360,938.32

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Solution

The fourth proportional to 615,505.12, 849,538.80 and 360,938.32 is: 498,178.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,505.12 : 849,538.80 = 360,938.32 : x
  2. Step 2: Convert to fraction form
    615,505.12/849,538.80 = 360,938.32/x
  3. Step 3: Cross multiply
    615,505.12x = 849,538.80 × 360,938.32
  4. Step 4: Simplify right side
    615,505.12x = 306,631,107,246.82
  5. Step 5: Solve for x
    x = 306,631,107,246.82/615,505.12
  6. Step 6: Final answer
    x = 498,178.00

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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.