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Finding the Fourth Proportional to 243,485.81, 336,009.70 and 136,055.92

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Solution

The fourth proportional to 243,485.81, 336,009.70 and 136,055.92 is: 187,756.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,485.81 : 336,009.70 = 136,055.92 : x
  2. Step 2: Convert to fraction form
    243,485.81/336,009.70 = 136,055.92/x
  3. Step 3: Cross multiply
    243,485.81x = 336,009.70 × 136,055.92
  4. Step 4: Simplify right side
    243,485.81x = 45,716,108,822.49
  5. Step 5: Solve for x
    x = 45,716,108,822.49/243,485.81
  6. Step 6: Final answer
    x = 187,756.76

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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.