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Finding the Fourth Proportional to 343,271.60, 514,907.40 and 308,279.60

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Solution

The fourth proportional to 343,271.60, 514,907.40 and 308,279.60 is: 462,419.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,271.60 : 514,907.40 = 308,279.60 : x
  2. Step 2: Convert to fraction form
    343,271.60/514,907.40 = 308,279.60/x
  3. Step 3: Cross multiply
    343,271.60x = 514,907.40 × 308,279.60
  4. Step 4: Simplify right side
    343,271.60x = 158,735,447,309.04
  5. Step 5: Solve for x
    x = 158,735,447,309.04/343,271.60
  6. Step 6: Final answer
    x = 462,419.40

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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.