Home / 368,412,397.02-508,453,689.69-209,681,113.20

Finding the Fourth Proportional to 368,412,397.02, 508,453,689.69 and 209,681,113.20

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Solution

The fourth proportional to 368,412,397.02, 508,453,689.69 and 209,681,113.20 is: 289,385,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,412,397.02 : 508,453,689.69 = 209,681,113.20 : x
  2. Step 2: Convert to fraction form
    368,412,397.02/508,453,689.69 = 209,681,113.20/x
  3. Step 3: Cross multiply
    368,412,397.02x = 508,453,689.69 × 209,681,113.20
  4. Step 4: Simplify right side
    368,412,397.02x = 106,613,135,664,846,560
  5. Step 5: Solve for x
    x = 106,613,135,664,846,560/368,412,397.02
  6. Step 6: Final answer
    x = 289,385,309.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.