Home / 390,032,160.26-538,251,316.25-211,421,898.38

Finding the Fourth Proportional to 390,032,160.26, 538,251,316.25 and 211,421,898.38

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Solution

The fourth proportional to 390,032,160.26, 538,251,316.25 and 211,421,898.38 is: 291,765,979.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,032,160.26 : 538,251,316.25 = 211,421,898.38 : x
  2. Step 2: Convert to fraction form
    390,032,160.26/538,251,316.25 = 211,421,898.38/x
  3. Step 3: Cross multiply
    390,032,160.26x = 538,251,316.25 × 211,421,898.38
  4. Step 4: Simplify right side
    390,032,160.26x = 113,798,115,087,397,264
  5. Step 5: Solve for x
    x = 113,798,115,087,397,264/390,032,160.26
  6. Step 6: Final answer
    x = 291,765,979.02

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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.