Home / 389,390.24-537,342.72-217,315.64

Finding the Fourth Proportional to 389,390.24, 537,342.72 and 217,315.64

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Solution

The fourth proportional to 389,390.24, 537,342.72 and 217,315.64 is: 299,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,390.24 : 537,342.72 = 217,315.64 : x
  2. Step 2: Convert to fraction form
    389,390.24/537,342.72 = 217,315.64/x
  3. Step 3: Cross multiply
    389,390.24x = 537,342.72 × 217,315.64
  4. Step 4: Simplify right side
    389,390.24x = 116,772,977,096.14
  5. Step 5: Solve for x
    x = 116,772,977,096.14/389,390.24
  6. Step 6: Final answer
    x = 299,886.76

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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.