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Finding the Fourth Proportional to 243,485.62, 336,009.43 and 136,055.76

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Solution

The fourth proportional to 243,485.62, 336,009.43 and 136,055.76 is: 187,756.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,485.62 : 336,009.43 = 136,055.76 : x
  2. Step 2: Convert to fraction form
    243,485.62/336,009.43 = 136,055.76/x
  3. Step 3: Cross multiply
    243,485.62x = 336,009.43 × 136,055.76
  4. Step 4: Simplify right side
    243,485.62x = 45,716,018,365.82
  5. Step 5: Solve for x
    x = 45,716,018,365.82/243,485.62
  6. Step 6: Final answer
    x = 187,756.54

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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.