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Finding the Fourth Proportional to 243,000.70, 364,501.05 and 131,026.30

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Solution

The fourth proportional to 243,000.70, 364,501.05 and 131,026.30 is: 196,539.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,000.70 : 364,501.05 = 131,026.30 : x
  2. Step 2: Convert to fraction form
    243,000.70/364,501.05 = 131,026.30/x
  3. Step 3: Cross multiply
    243,000.70x = 364,501.05 × 131,026.30
  4. Step 4: Simplify right side
    243,000.70x = 47,759,223,927.62
  5. Step 5: Solve for x
    x = 47,759,223,927.62/243,000.70
  6. Step 6: Final answer
    x = 196,539.45

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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.