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Finding the Fourth Proportional to 304,681.79, 456,970.75 and 91,391.88

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Solution

The fourth proportional to 304,681.79, 456,970.75 and 91,391.88 is: 137,072.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,681.79 : 456,970.75 = 91,391.88 : x
  2. Step 2: Convert to fraction form
    304,681.79/456,970.75 = 91,391.88/x
  3. Step 3: Cross multiply
    304,681.79x = 456,970.75 × 91,391.88
  4. Step 4: Simplify right side
    304,681.79x = 41,763,417,432.67
  5. Step 5: Solve for x
    x = 41,763,417,432.67/304,681.79
  6. Step 6: Final answer
    x = 137,072.25

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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.