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Finding the Fourth Proportional to 371,319.40, 556,979.10 and 245,348.20

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Solution

The fourth proportional to 371,319.40, 556,979.10 and 245,348.20 is: 368,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,319.40 : 556,979.10 = 245,348.20 : x
  2. Step 2: Convert to fraction form
    371,319.40/556,979.10 = 245,348.20/x
  3. Step 3: Cross multiply
    371,319.40x = 556,979.10 × 245,348.20
  4. Step 4: Simplify right side
    371,319.40x = 136,653,819,622.62
  5. Step 5: Solve for x
    x = 136,653,819,622.62/371,319.40
  6. Step 6: Final answer
    x = 368,022.30

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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.