Home / 339,981.40-509,972.10-306,155.80

Finding the Fourth Proportional to 339,981.40, 509,972.10 and 306,155.80

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Solution

The fourth proportional to 339,981.40, 509,972.10 and 306,155.80 is: 459,233.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,981.40 : 509,972.10 = 306,155.80 : x
  2. Step 2: Convert to fraction form
    339,981.40/509,972.10 = 306,155.80/x
  3. Step 3: Cross multiply
    339,981.40x = 509,972.10 × 306,155.80
  4. Step 4: Simplify right side
    339,981.40x = 156,130,916,253.18
  5. Step 5: Solve for x
    x = 156,130,916,253.18/339,981.40
  6. Step 6: Final answer
    x = 459,233.70

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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.