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Finding the Fourth Proportional to 342,492.80, 513,739.20 and 155,504.30

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Solution

The fourth proportional to 342,492.80, 513,739.20 and 155,504.30 is: 233,256.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,492.80 : 513,739.20 = 155,504.30 : x
  2. Step 2: Convert to fraction form
    342,492.80/513,739.20 = 155,504.30/x
  3. Step 3: Cross multiply
    342,492.80x = 513,739.20 × 155,504.30
  4. Step 4: Simplify right side
    342,492.80x = 79,888,654,678.56
  5. Step 5: Solve for x
    x = 79,888,654,678.56/342,492.80
  6. Step 6: Final answer
    x = 233,256.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.