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Finding the Fourth Proportional to 243,409.95, 335,903.81 and 134,521.58

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Solution

The fourth proportional to 243,409.95, 335,903.81 and 134,521.58 is: 185,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,409.95 : 335,903.81 = 134,521.58 : x
  2. Step 2: Convert to fraction form
    243,409.95/335,903.81 = 134,521.58/x
  3. Step 3: Cross multiply
    243,409.95x = 335,903.81 × 134,521.58
  4. Step 4: Simplify right side
    243,409.95x = 45,186,308,897.09
  5. Step 5: Solve for x
    x = 45,186,308,897.09/243,409.95
  6. Step 6: Final answer
    x = 185,638.71

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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.