Home / 390,042,096.12-538,246,427.22-213,824,068.92

Finding the Fourth Proportional to 390,042,096.12, 538,246,427.22 and 213,824,068.92

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Solution

The fourth proportional to 390,042,096.12, 538,246,427.22 and 213,824,068.92 is: 295,070,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,042,096.12 : 538,246,427.22 = 213,824,068.92 : x
  2. Step 2: Convert to fraction form
    390,042,096.12/538,246,427.22 = 213,824,068.92/x
  3. Step 3: Cross multiply
    390,042,096.12x = 538,246,427.22 × 213,824,068.92
  4. Step 4: Simplify right side
    390,042,096.12x = 115,090,041,149,833,040
  5. Step 5: Solve for x
    x = 115,090,041,149,833,040/390,042,096.12
  6. Step 6: Final answer
    x = 295,070,820.03

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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.