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Finding the Fourth Proportional to 398,891.20, 598,336.80 and 249,300.40

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Solution

The fourth proportional to 398,891.20, 598,336.80 and 249,300.40 is: 373,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,891.20 : 598,336.80 = 249,300.40 : x
  2. Step 2: Convert to fraction form
    398,891.20/598,336.80 = 249,300.40/x
  3. Step 3: Cross multiply
    398,891.20x = 598,336.80 × 249,300.40
  4. Step 4: Simplify right side
    398,891.20x = 149,165,603,574.72
  5. Step 5: Solve for x
    x = 149,165,603,574.72/398,891.20
  6. Step 6: Final answer
    x = 373,950.60

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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.