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Finding the Fourth Proportional to 342,323.40, 513,485.10 and 155,334.90

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Solution

The fourth proportional to 342,323.40, 513,485.10 and 155,334.90 is: 233,002.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,323.40 : 513,485.10 = 155,334.90 : x
  2. Step 2: Convert to fraction form
    342,323.40/513,485.10 = 155,334.90/x
  3. Step 3: Cross multiply
    342,323.40x = 513,485.10 × 155,334.90
  4. Step 4: Simplify right side
    342,323.40x = 79,762,156,659.99
  5. Step 5: Solve for x
    x = 79,762,156,659.99/342,323.40
  6. Step 6: Final answer
    x = 233,002.35

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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.