Home / 390,251.98-538,558.23-220,482.46

Finding the Fourth Proportional to 390,251.98, 538,558.23 and 220,482.46

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Solution

The fourth proportional to 390,251.98, 538,558.23 and 220,482.46 is: 304,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,251.98 : 538,558.23 = 220,482.46 : x
  2. Step 2: Convert to fraction form
    390,251.98/538,558.23 = 220,482.46/x
  3. Step 3: Cross multiply
    390,251.98x = 538,558.23 × 220,482.46
  4. Step 4: Simplify right side
    390,251.98x = 118,742,643,403.65
  5. Step 5: Solve for x
    x = 118,742,643,403.65/390,251.98
  6. Step 6: Final answer
    x = 304,271.73

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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.