Home / 211,298,548.78-291,548,332.29-121,988,945.32

Finding the Fourth Proportional to 211,298,548.78, 291,548,332.29 and 121,988,945.32

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Solution

The fourth proportional to 211,298,548.78, 291,548,332.29 and 121,988,945.32 is: 168,319,535.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,298,548.78 : 291,548,332.29 = 121,988,945.32 : x
  2. Step 2: Convert to fraction form
    211,298,548.78/291,548,332.29 = 121,988,945.32/x
  3. Step 3: Cross multiply
    211,298,548.78x = 291,548,332.29 × 121,988,945.32
  4. Step 4: Simplify right side
    211,298,548.78x = 35,565,673,565,862,000
  5. Step 5: Solve for x
    x = 35,565,673,565,862,000/211,298,548.78
  6. Step 6: Final answer
    x = 168,319,535.43

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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.