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Finding the Fourth Proportional to 260,014.80, 390,065.40 and 102,248.40

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Solution

The fourth proportional to 260,014.80, 390,065.40 and 102,248.40 is: 153,389.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,014.80 : 390,065.40 = 102,248.40 : x
  2. Step 2: Convert to fraction form
    260,014.80/390,065.40 = 102,248.40/x
  3. Step 3: Cross multiply
    260,014.80x = 390,065.40 × 102,248.40
  4. Step 4: Simplify right side
    260,014.80x = 39,883,563,045.36
  5. Step 5: Solve for x
    x = 39,883,563,045.36/260,014.80
  6. Step 6: Final answer
    x = 153,389.59

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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.