Home / 280,685,612.64-420,207,418.92-163,743,398.40

Finding the Fourth Proportional to 280,685,612.64, 420,207,418.92 and 163,743,398.40

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Solution

The fourth proportional to 280,685,612.64, 420,207,418.92 and 163,743,398.40 is: 245,136,151.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,685,612.64 : 420,207,418.92 = 163,743,398.40 : x
  2. Step 2: Convert to fraction form
    280,685,612.64/420,207,418.92 = 163,743,398.40/x
  3. Step 3: Cross multiply
    280,685,612.64x = 420,207,418.92 × 163,743,398.40
  4. Step 4: Simplify right side
    280,685,612.64x = 68,806,190,806,853,264
  5. Step 5: Solve for x
    x = 68,806,190,806,853,264/280,685,612.64
  6. Step 6: Final answer
    x = 245,136,151.30

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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.