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Finding the Fourth Proportional to 260,037.10, 390,055.65 and 126,848.80

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Solution

The fourth proportional to 260,037.10, 390,055.65 and 126,848.80 is: 190,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,037.10 : 390,055.65 = 126,848.80 : x
  2. Step 2: Convert to fraction form
    260,037.10/390,055.65 = 126,848.80/x
  3. Step 3: Cross multiply
    260,037.10x = 390,055.65 × 126,848.80
  4. Step 4: Simplify right side
    260,037.10x = 49,478,091,135.72
  5. Step 5: Solve for x
    x = 49,478,091,135.72/260,037.10
  6. Step 6: Final answer
    x = 190,273.20

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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.