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Finding the Fourth Proportional to 262,019.51, 392,639.74 and 135,490.89

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Solution

The fourth proportional to 262,019.51, 392,639.74 and 135,490.89 is: 203,034.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,019.51 : 392,639.74 = 135,490.89 : x
  2. Step 2: Convert to fraction form
    262,019.51/392,639.74 = 135,490.89/x
  3. Step 3: Cross multiply
    262,019.51x = 392,639.74 × 135,490.89
  4. Step 4: Simplify right side
    262,019.51x = 53,199,108,955.64
  5. Step 5: Solve for x
    x = 53,199,108,955.64/262,019.51
  6. Step 6: Final answer
    x = 203,034.92

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1.5x scale

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.