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Finding the Fourth Proportional to 239,143.80, 358,586.10 and 98,743.80

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Solution

The fourth proportional to 239,143.80, 358,586.10 and 98,743.80 is: 148,062.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,143.80 : 358,586.10 = 98,743.80 : x
  2. Step 2: Convert to fraction form
    239,143.80/358,586.10 = 98,743.80/x
  3. Step 3: Cross multiply
    239,143.80x = 358,586.10 × 98,743.80
  4. Step 4: Simplify right side
    239,143.80x = 35,408,154,141.18
  5. Step 5: Solve for x
    x = 35,408,154,141.18/239,143.80
  6. Step 6: Final answer
    x = 148,062.19

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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.