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Finding the Fourth Proportional to 260,000.72, 390,001.08 and 93,788.72

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Solution

The fourth proportional to 260,000.72, 390,001.08 and 93,788.72 is: 140,683.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,000.72 : 390,001.08 = 93,788.72 : x
  2. Step 2: Convert to fraction form
    260,000.72/390,001.08 = 93,788.72/x
  3. Step 3: Cross multiply
    260,000.72x = 390,001.08 × 93,788.72
  4. Step 4: Simplify right side
    260,000.72x = 36,577,702,091.82
  5. Step 5: Solve for x
    x = 36,577,702,091.82/260,000.72
  6. Step 6: Final answer
    x = 140,683.08

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Similar ratio
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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.