Home / 390,032,162.01-538,251,318.66-211,421,900.13

Finding the Fourth Proportional to 390,032,162.01, 538,251,318.66 and 211,421,900.13

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Solution

The fourth proportional to 390,032,162.01, 538,251,318.66 and 211,421,900.13 is: 291,765,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,032,162.01 : 538,251,318.66 = 211,421,900.13 : x
  2. Step 2: Convert to fraction form
    390,032,162.01/538,251,318.66 = 211,421,900.13/x
  3. Step 3: Cross multiply
    390,032,162.01x = 538,251,318.66 × 211,421,900.13
  4. Step 4: Simplify right side
    390,032,162.01x = 113,798,116,538,575,312
  5. Step 5: Solve for x
    x = 113,798,116,538,575,312/390,032,162.01
  6. Step 6: Final answer
    x = 291,765,981.43

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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.