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Finding the Fourth Proportional to 260,088.80, 389,864.40 and 141,509.60

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Solution

The fourth proportional to 260,088.80, 389,864.40 and 141,509.60 is: 212,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,088.80 : 389,864.40 = 141,509.60 : x
  2. Step 2: Convert to fraction form
    260,088.80/389,864.40 = 141,509.60/x
  3. Step 3: Cross multiply
    260,088.80x = 389,864.40 × 141,509.60
  4. Step 4: Simplify right side
    260,088.80x = 55,169,555,298.24
  5. Step 5: Solve for x
    x = 55,169,555,298.24/260,088.80
  6. Step 6: Final answer
    x = 212,118.15

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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.