Home / 390,024,116.21-538,267,331.08-213,846,162.24

Finding the Fourth Proportional to 390,024,116.21, 538,267,331.08 and 213,846,162.24

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Solution

The fourth proportional to 390,024,116.21, 538,267,331.08 and 213,846,162.24 is: 295,126,373.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,024,116.21 : 538,267,331.08 = 213,846,162.24 : x
  2. Step 2: Convert to fraction form
    390,024,116.21/538,267,331.08 = 213,846,162.24/x
  3. Step 3: Cross multiply
    390,024,116.21x = 538,267,331.08 × 213,846,162.24
  4. Step 4: Simplify right side
    390,024,116.21x = 115,106,403,010,625,488
  5. Step 5: Solve for x
    x = 115,106,403,010,625,488/390,024,116.21
  6. Step 6: Final answer
    x = 295,126,373.54

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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.