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Finding the Fourth Proportional to 260,549.72, 390,395.28 and 238,760.72

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Solution

The fourth proportional to 260,549.72, 390,395.28 and 238,760.72 is: 357,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,549.72 : 390,395.28 = 238,760.72 : x
  2. Step 2: Convert to fraction form
    260,549.72/390,395.28 = 238,760.72/x
  3. Step 3: Cross multiply
    260,549.72x = 390,395.28 × 238,760.72
  4. Step 4: Simplify right side
    260,549.72x = 93,211,058,137.40
  5. Step 5: Solve for x
    x = 93,211,058,137.40/260,549.72
  6. Step 6: Final answer
    x = 357,747.68

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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.