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Finding the Fourth Proportional to 260,102.39, 390,153.59 and 73,113.89

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Solution

The fourth proportional to 260,102.39, 390,153.59 and 73,113.89 is: 109,670.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,102.39 : 390,153.59 = 73,113.89 : x
  2. Step 2: Convert to fraction form
    260,102.39/390,153.59 = 73,113.89/x
  3. Step 3: Cross multiply
    260,102.39x = 390,153.59 × 73,113.89
  4. Step 4: Simplify right side
    260,102.39x = 28,525,646,609.19
  5. Step 5: Solve for x
    x = 28,525,646,609.19/260,102.39
  6. Step 6: Final answer
    x = 109,670.84

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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.