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Finding the Fourth Proportional to 402,371.20, 602,900.70 and 345,946.60

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Solution

The fourth proportional to 402,371.20, 602,900.70 and 345,946.60 is: 518,355.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,371.20 : 602,900.70 = 345,946.60 : x
  2. Step 2: Convert to fraction form
    402,371.20/602,900.70 = 345,946.60/x
  3. Step 3: Cross multiply
    402,371.20x = 602,900.70 × 345,946.60
  4. Step 4: Simplify right side
    402,371.20x = 208,571,447,302.62
  5. Step 5: Solve for x
    x = 208,571,447,302.62/402,371.20
  6. Step 6: Final answer
    x = 518,355.81

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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.