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Finding the Fourth Proportional to 243,371.20, 365,056.80 and 159,390.40

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Solution

The fourth proportional to 243,371.20, 365,056.80 and 159,390.40 is: 239,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,371.20 : 365,056.80 = 159,390.40 : x
  2. Step 2: Convert to fraction form
    243,371.20/365,056.80 = 159,390.40/x
  3. Step 3: Cross multiply
    243,371.20x = 365,056.80 × 159,390.40
  4. Step 4: Simplify right side
    243,371.20x = 58,186,549,374.72
  5. Step 5: Solve for x
    x = 58,186,549,374.72/243,371.20
  6. Step 6: Final answer
    x = 239,085.60

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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.