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Finding the Fourth Proportional to 243,478.71, 365,257.35 and 74,999.01

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Solution

The fourth proportional to 243,478.71, 365,257.35 and 74,999.01 is: 112,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,478.71 : 365,257.35 = 74,999.01 : x
  2. Step 2: Convert to fraction form
    243,478.71/365,257.35 = 74,999.01/x
  3. Step 3: Cross multiply
    243,478.71x = 365,257.35 × 74,999.01
  4. Step 4: Simplify right side
    243,478.71x = 27,393,941,014.94
  5. Step 5: Solve for x
    x = 27,393,941,014.94/243,478.71
  6. Step 6: Final answer
    x = 112,510.62

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1.5x scale

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.