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Finding the Fourth Proportional to 260,326.56, 390,349.47 and 140,447.76

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Solution

The fourth proportional to 260,326.56, 390,349.47 and 140,447.76 is: 210,595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,326.56 : 390,349.47 = 140,447.76 : x
  2. Step 2: Convert to fraction form
    260,326.56/390,349.47 = 140,447.76/x
  3. Step 3: Cross multiply
    260,326.56x = 390,349.47 × 140,447.76
  4. Step 4: Simplify right side
    260,326.56x = 54,823,708,678.69
  5. Step 5: Solve for x
    x = 54,823,708,678.69/260,326.56
  6. Step 6: Final answer
    x = 210,595.91

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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.