Home / 261,886.28-361,391.40-153,000.72

Finding the Fourth Proportional to 261,886.28, 361,391.40 and 153,000.72

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Solution

The fourth proportional to 261,886.28, 361,391.40 and 153,000.72 is: 211,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,886.28 : 361,391.40 = 153,000.72 : x
  2. Step 2: Convert to fraction form
    261,886.28/361,391.40 = 153,000.72/x
  3. Step 3: Cross multiply
    261,886.28x = 361,391.40 × 153,000.72
  4. Step 4: Simplify right side
    261,886.28x = 55,293,144,401.81
  5. Step 5: Solve for x
    x = 55,293,144,401.81/261,886.28
  6. Step 6: Final answer
    x = 211,134.18

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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.