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Finding the Fourth Proportional to 339,970.20, 509,955.30 and 153,346.20

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Solution

The fourth proportional to 339,970.20, 509,955.30 and 153,346.20 is: 230,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,970.20 : 509,955.30 = 153,346.20 : x
  2. Step 2: Convert to fraction form
    339,970.20/509,955.30 = 153,346.20/x
  3. Step 3: Cross multiply
    339,970.20x = 509,955.30 × 153,346.20
  4. Step 4: Simplify right side
    339,970.20x = 78,199,707,424.86
  5. Step 5: Solve for x
    x = 78,199,707,424.86/339,970.20
  6. Step 6: Final answer
    x = 230,019.30

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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.