Home / 210,301,181.20-290,231,339.52-121,020,492.88

Finding the Fourth Proportional to 210,301,181.20, 290,231,339.52 and 121,020,492.88

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Solution

The fourth proportional to 210,301,181.20, 290,231,339.52 and 121,020,492.88 is: 167,017,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,301,181.20 : 290,231,339.52 = 121,020,492.88 : x
  2. Step 2: Convert to fraction form
    210,301,181.20/290,231,339.52 = 121,020,492.88/x
  3. Step 3: Cross multiply
    210,301,181.20x = 290,231,339.52 × 121,020,492.88
  4. Step 4: Simplify right side
    210,301,181.20x = 35,123,939,757,933,020
  5. Step 5: Solve for x
    x = 35,123,939,757,933,020/210,301,181.20
  6. Step 6: Final answer
    x = 167,017,320.39

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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.