Home / 390,054,605.98-538,275,226.71-213,838,817.93

Finding the Fourth Proportional to 390,054,605.98, 538,275,226.71 and 213,838,817.93

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Solution

The fourth proportional to 390,054,605.98, 538,275,226.71 and 213,838,817.93 is: 295,097,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,054,605.98 : 538,275,226.71 = 213,838,817.93 : x
  2. Step 2: Convert to fraction form
    390,054,605.98/538,275,226.71 = 213,838,817.93/x
  3. Step 3: Cross multiply
    390,054,605.98x = 538,275,226.71 × 213,838,817.93
  4. Step 4: Simplify right side
    390,054,605.98x = 115,104,138,200,669,168
  5. Step 5: Solve for x
    x = 115,104,138,200,669,168/390,054,605.98
  6. Step 6: Final answer
    x = 295,097,497.72

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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.