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Finding the Fourth Proportional to 410,279.20, 615,418.80 and 249,920.80

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Solution

The fourth proportional to 410,279.20, 615,418.80 and 249,920.80 is: 374,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,279.20 : 615,418.80 = 249,920.80 : x
  2. Step 2: Convert to fraction form
    410,279.20/615,418.80 = 249,920.80/x
  3. Step 3: Cross multiply
    410,279.20x = 615,418.80 × 249,920.80
  4. Step 4: Simplify right side
    410,279.20x = 153,805,958,831.04
  5. Step 5: Solve for x
    x = 153,805,958,831.04/410,279.20
  6. Step 6: Final answer
    x = 374,881.20

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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.