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Finding the Fourth Proportional to 243,510.30, 365,265.45 and 138,534.30

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Solution

The fourth proportional to 243,510.30, 365,265.45 and 138,534.30 is: 207,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,510.30 : 365,265.45 = 138,534.30 : x
  2. Step 2: Convert to fraction form
    243,510.30/365,265.45 = 138,534.30/x
  3. Step 3: Cross multiply
    243,510.30x = 365,265.45 × 138,534.30
  4. Step 4: Simplify right side
    243,510.30x = 50,601,793,429.94
  5. Step 5: Solve for x
    x = 50,601,793,429.94/243,510.30
  6. Step 6: Final answer
    x = 207,801.45

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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.