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Finding the Fourth Proportional to 243,485.69, 336,043.63 and 140,117.76

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Solution

The fourth proportional to 243,485.69, 336,043.63 and 140,117.76 is: 193,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,485.69 : 336,043.63 = 140,117.76 : x
  2. Step 2: Convert to fraction form
    243,485.69/336,043.63 = 140,117.76/x
  3. Step 3: Cross multiply
    243,485.69x = 336,043.63 × 140,117.76
  4. Step 4: Simplify right side
    243,485.69x = 47,085,680,347.57
  5. Step 5: Solve for x
    x = 47,085,680,347.57/243,485.69
  6. Step 6: Final answer
    x = 193,381.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.