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Finding the Fourth Proportional to 445,963.81, 615,430.46 and 242,014.74

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Solution

The fourth proportional to 445,963.81, 615,430.46 and 242,014.74 is: 333,980.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,963.81 : 615,430.46 = 242,014.74 : x
  2. Step 2: Convert to fraction form
    445,963.81/615,430.46 = 242,014.74/x
  3. Step 3: Cross multiply
    445,963.81x = 615,430.46 × 242,014.74
  4. Step 4: Simplify right side
    445,963.81x = 148,943,242,764.98
  5. Step 5: Solve for x
    x = 148,943,242,764.98/445,963.81
  6. Step 6: Final answer
    x = 333,980.56

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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.