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Finding the Fourth Proportional to 260,106.40, 390,062.40 and 102,302.20

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Solution

The fourth proportional to 260,106.40, 390,062.40 and 102,302.20 is: 153,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,106.40 : 390,062.40 = 102,302.20 : x
  2. Step 2: Convert to fraction form
    260,106.40/390,062.40 = 102,302.20/x
  3. Step 3: Cross multiply
    260,106.40x = 390,062.40 × 102,302.20
  4. Step 4: Simplify right side
    260,106.40x = 39,904,241,657.28
  5. Step 5: Solve for x
    x = 39,904,241,657.28/260,106.40
  6. Step 6: Final answer
    x = 153,415.07

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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.