Home / 390,436,852.88-538,812,772.88-214,224,801.52

Finding the Fourth Proportional to 390,436,852.88, 538,812,772.88 and 214,224,801.52

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Solution

The fourth proportional to 390,436,852.88, 538,812,772.88 and 214,224,801.52 is: 295,635,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,436,852.88 : 538,812,772.88 = 214,224,801.52 : x
  2. Step 2: Convert to fraction form
    390,436,852.88/538,812,772.88 = 214,224,801.52/x
  3. Step 3: Cross multiply
    390,436,852.88x = 538,812,772.88 × 214,224,801.52
  4. Step 4: Simplify right side
    390,436,852.88x = 115,427,059,326,658,848
  5. Step 5: Solve for x
    x = 115,427,059,326,658,848/390,436,852.88
  6. Step 6: Final answer
    x = 295,635,666.75

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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.