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Finding the Fourth Proportional to 342,480.20, 513,710.70 and 155,491.40

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Solution

The fourth proportional to 342,480.20, 513,710.70 and 155,491.40 is: 233,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,480.20 : 513,710.70 = 155,491.40 : x
  2. Step 2: Convert to fraction form
    342,480.20/513,710.70 = 155,491.40/x
  3. Step 3: Cross multiply
    342,480.20x = 513,710.70 × 155,491.40
  4. Step 4: Simplify right side
    342,480.20x = 79,877,595,937.98
  5. Step 5: Solve for x
    x = 79,877,595,937.98/342,480.20
  6. Step 6: Final answer
    x = 233,232.74

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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.