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Finding the Fourth Proportional to 340,065.20, 510,097.80 and 319,329.20

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Solution

The fourth proportional to 340,065.20, 510,097.80 and 319,329.20 is: 478,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,065.20 : 510,097.80 = 319,329.20 : x
  2. Step 2: Convert to fraction form
    340,065.20/510,097.80 = 319,329.20/x
  3. Step 3: Cross multiply
    340,065.20x = 510,097.80 × 319,329.20
  4. Step 4: Simplify right side
    340,065.20x = 162,889,122,395.76
  5. Step 5: Solve for x
    x = 162,889,122,395.76/340,065.20
  6. Step 6: Final answer
    x = 478,993.80

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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.