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Finding the Fourth Proportional to 342,310.20, 513,465.30 and 155,686.20

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Solution

The fourth proportional to 342,310.20, 513,465.30 and 155,686.20 is: 233,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,310.20 : 513,465.30 = 155,686.20 : x
  2. Step 2: Convert to fraction form
    342,310.20/513,465.30 = 155,686.20/x
  3. Step 3: Cross multiply
    342,310.20x = 513,465.30 × 155,686.20
  4. Step 4: Simplify right side
    342,310.20x = 79,939,461,388.86
  5. Step 5: Solve for x
    x = 79,939,461,388.86/342,310.20
  6. Step 6: Final answer
    x = 233,529.30

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1.5x scale

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.