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Finding the Fourth Proportional to 402,080.80, 602,246.40 and 323,348.80

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Solution

The fourth proportional to 402,080.80, 602,246.40 and 323,348.80 is: 484,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,080.80 : 602,246.40 = 323,348.80 : x
  2. Step 2: Convert to fraction form
    402,080.80/602,246.40 = 323,348.80/x
  3. Step 3: Cross multiply
    402,080.80x = 602,246.40 × 323,348.80
  4. Step 4: Simplify right side
    402,080.80x = 194,735,650,744.32
  5. Step 5: Solve for x
    x = 194,735,650,744.32/402,080.80
  6. Step 6: Final answer
    x = 484,319.70

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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.