Home / 292,271.20-438,579.60-213,186.40

Finding the Fourth Proportional to 292,271.20, 438,579.60 and 213,186.40

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Solution

The fourth proportional to 292,271.20, 438,579.60 and 213,186.40 is: 319,905.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,271.20 : 438,579.60 = 213,186.40 : x
  2. Step 2: Convert to fraction form
    292,271.20/438,579.60 = 213,186.40/x
  3. Step 3: Cross multiply
    292,271.20x = 438,579.60 × 213,186.40
  4. Step 4: Simplify right side
    292,271.20x = 93,499,206,037.44
  5. Step 5: Solve for x
    x = 93,499,206,037.44/292,271.20
  6. Step 6: Final answer
    x = 319,905.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.