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Finding the Fourth Proportional to 243,145.06, 335,717.92 and 157,154.92

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Solution

The fourth proportional to 243,145.06, 335,717.92 and 157,154.92 is: 216,988.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,145.06 : 335,717.92 = 157,154.92 : x
  2. Step 2: Convert to fraction form
    243,145.06/335,717.92 = 157,154.92/x
  3. Step 3: Cross multiply
    243,145.06x = 335,717.92 × 157,154.92
  4. Step 4: Simplify right side
    243,145.06x = 52,759,722,860.17
  5. Step 5: Solve for x
    x = 52,759,722,860.17/243,145.06
  6. Step 6: Final answer
    x = 216,988.67

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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.