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Finding the Fourth Proportional to 243,012.40, 364,518.60 and 136,724.20

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Solution

The fourth proportional to 243,012.40, 364,518.60 and 136,724.20 is: 205,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,012.40 : 364,518.60 = 136,724.20 : x
  2. Step 2: Convert to fraction form
    243,012.40/364,518.60 = 136,724.20/x
  3. Step 3: Cross multiply
    243,012.40x = 364,518.60 × 136,724.20
  4. Step 4: Simplify right side
    243,012.40x = 49,838,513,970.12
  5. Step 5: Solve for x
    x = 49,838,513,970.12/243,012.40
  6. Step 6: Final answer
    x = 205,086.30

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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.