Home / 390,635,134.11-538,831,278.69-231,752,770.98

Finding the Fourth Proportional to 390,635,134.11, 538,831,278.69 and 231,752,770.98

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Solution

The fourth proportional to 390,635,134.11, 538,831,278.69 and 231,752,770.98 is: 319,673,349.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,635,134.11 : 538,831,278.69 = 231,752,770.98 : x
  2. Step 2: Convert to fraction form
    390,635,134.11/538,831,278.69 = 231,752,770.98/x
  3. Step 3: Cross multiply
    390,635,134.11x = 538,831,278.69 × 231,752,770.98
  4. Step 4: Simplify right side
    390,635,134.11x = 124,875,641,927,104,128
  5. Step 5: Solve for x
    x = 124,875,641,927,104,128/390,635,134.11
  6. Step 6: Final answer
    x = 319,673,349.94

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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.